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CBSE Questions for Class 11 Medical Biology Animal Kingdom Quiz 13 - MCQExams.com
CBSE
Class 11 Medical Biology
Animal Kingdom
Quiz 13
Flaps in fish are present on other side of ...
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Head
0%
Trunk
0%
Tall
0%
Eyes
Explanation
Most fish rely on gills to take in oxygen. Gills can be covered with flaps, hidden under slits, or carried externally.
Covered gills are typically cover in gills with a flap called an operculum leaving one opening at the flap on each side of the fish's head.
So, the correct option is 'Tall'.
Bat is a mammal because _________.
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Bats have wings like birds
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Bats have tail like other mammals
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Bats have milk-secreting gland
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Bat is a cold blooded animal
Explanation
A mammal is a warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur, females that secrete milk for the nourishment of the young ones and (typically) the birth of live young.
Bats are mammals because they give birth to live young, nurse their young ones, have hair and like all mammals, the females of any species possess mammary glands that produce milk to feed their young offspring.
So, the correct answer is option C.
Face of humans is
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prognathous.
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orthognathous.
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hypognathous.
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epignathous
Explanation
Prognathous is the type of human face in which lower or the upper jaw projects outwards abnormally.
So the correct option is 'Prognathous'.
Thecodont teeth are present in?
a. Sphenodon
b. Crocodiles
c. Mammals
d. Scoliodon.
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c only
0%
b & c only
0%
a, b and c only
0%
a, b, c & d
Explanation
Teeth on the basis of types of attachment are divided into 3 types-Acrodont, pluerdont and thecodont.
Tecodont is a type of teeth present in the animals where the root of the teeth is firmly attached in the socket of the jawbone.This is the strongest attachment of teeth and is found in mammals.
So, the correct option is 'c only'
All vertebrates carry _______without exception.
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RBC
0%
Bony vertebral column
0%
Glandular skin
0%
All of the above
Explanation
A. RBCs or the red blood cells contain a red coloured pigment due to the presence of iron) called haemoglobin which carries oxygen to different parts of the body.
It is present in all the vertebrates irrespective of its size.
B. The vertebral column is present only in higher vertebrates in all the stages of development whereas, in lower vertebrates, the notochord is present in the larval stage and are not present in adults.
C. Only a few vertebral animals have glandular skin. Eg- frogs (have glandular moist skin).
So, the correct answer is 'RBC'.
State whether the following statement is true or false.
Tusks are modified teeth that can tear the bark of the trees.
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0%
True
0%
False
Explanation
Tusks are elongated, continuously growing front teeth, that protrude well beyond the mouth of certain mammal species. They are most commonly canine teeth, like in walruses, but incisors in the case of elephants. Elephants use their tusks as digging and boring tools. Hence can be used for tearing the bark of trees.
So, the correct option is 'True'.
Identify the correct set of mammals that live in water.
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Whales,seals,dolphins
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Seals, whales, shark
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Hippocampus, whale, scoliodon
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Rohu, shark, catla
Explanation
In aquatic mammals, whales, seals and dolphins live completely in water.
Sharks, rohu, catla and hippocampus (sea horse) are not mammals.
So, the correct option is option A.
One of the following fish burrows into the mud and forms gelatinous cocoon around it?
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Protopterus
0%
Neoceratodus
0%
Lepidosiren
0%
American lung fish
Explanation
Lungfishes belong to the subclass Dipnoi are the members of the living breathing fishes. These are generally very large in size and are found in Africa, South America and Australia. The African lungfish is the Protopterus which is the largest. The African lungfish is a voracious eater.
The African lungfish burrows itself into the bottom of a river or the lake for the dry sleep or aestivation. And covers itself in a mucous layer till the dry season passes.
Thus correct option is "A"
Higher proportion of unsaturated fatty acids are present in?
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Shallow Sea fishes
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Deep Sea fishes
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Deep River fishes
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Shallow River fishes
Explanation
A higher proportion of unsaturated fatty acids is present in deep sea fishes.
Deep sea fishes
will need the unsaturated fatty acid chains in order to lower the
critical temperature for the transition from a liquid crystal (fluid) to a gel phase. As the temperature in the deep sea is very low.
So, the correct option is '
Deep Sea fishes'.
Radial symmetry found in?
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Echinodermates & Reptiles
0%
Porifera & Echinodermates
0%
Arthropods & Reptiles
0%
Porifera & Reptiles
Explanation
Radial symmetry
is characterised by the division of the body into two equal halves by any plane passing through the centre. This type of symmetry is found in Phylum
Porifera
and
Echinodermata
.
The correct answer is option B.
Which of the following is a group of warm blooded animals?
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Pisces
0%
Amphibia
0%
Reptilia
0%
Aves
Explanation
Aves includes the class of birds. they are air-breathing, warm-blooded, oviparous, bipedal, and covered by feathers. The body is boat-shaped and divided into head, neck, trunk, and tail.
Pisces, Amphibia, and Reptilia are cold-blooded vertebrates.
The correct answer is option D.
What is the symmetry of medusa
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Bilateral
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Radial
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Asymmetrical
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Biradial
Explanation
Medusa is shaped like an umbrella, bell, or saucer, and shows radial symmetry. The outer convex surface is known as exumbrella, while the inner concave surface is called subumbrella. The subumbrellar surface shows four radial canals and a circular canal of the gastrovascular system.
Bat belongs to the class ___________.
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Amphibia
0%
Reptilia
0%
Aves
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Mammalia
Explanation
Bats belong to the class Mammalia as they have mammary glands. They give birth to young ones and nourish their babies with the milk produced from the mammary glands. They are the only mammals that have wings and can fly.
So, the correct answer is option D.
A stumpy, laterally compressed tail is a characteristic of
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Tree snake
0%
Sea snake
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Rat snake
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Rattle snake
Explanation
All sea snakes have paddle-like tails and many have laterally compressed bodies that give them an eel-like appearance. They are venomous snake and live in marine environment.
Thus, the correct answer is option B.
Which of the following is are the exclusive feature of mammal? (not found in any other animal group)
(a) Diaphragm
(b) Seven cervical vertebrate
(c) Mammary glands
(d) Gives birth to young ones
(e) Non nucleated RBC
(f) Pinna
(g) Corpus callosum in brain.
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a, b, c, d, e, f, g
0%
a, c, e, f, g
0%
a, b, d, e, f
0%
a, b, d, e, f, g
Explanation
All the mentioned features are the exclusive characteristics of mammals.
However, there are some exceptions like:
The corpus callosum is only found in placental mammals. It spans part of the longitudinal fissure, connecting the left and right cerebral hemispheres, enabling communication between them.
Echidna and platypus are monotremes (egg-laying mammals).
Echidna does not have pinna (external ear).
Camels have
nucleated RBC.
So, the correct option is A.
Which of the following is a class?
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Mammalia
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Sapindales
0%
Primata
0%
Poales
Explanation
Mammalia is a class that includes animals that nourish their young ones with milk. Mammals are terrestrial, warm-blooded animals.
Sapindales is an order of dicotyledonous flowering plants.
Primate is an order of class Mammalia.
Poales is an order of monocotyledonous flowering plants.
Thus, the correct answer is (A).
In reptiles such as adult Vipera.
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Mesodermal scales and scutes are present that are shed as skin cast
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Four chambered heart is present
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Are tetrapods and have glandular skin
0%
External ear opening is absent
Explanation
In reptiles scales and scutes are of epidermal origin ,and they have three chambered heart and they also belongs to tetrapods but don't have glandular skin whereas external ear opening is absent.
So, the correct option is d.
Exoskeletal structures of reptiles are in the form of?
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Dermal scales
0%
Epidermal scales
0%
Fur
0%
Bones
Explanation
The correct answer is option B.
The exoskeleton of reptiles is made up of epidermal scales. The skin of reptiles is covered with horny scales, shields, or scutes.
Reasons for success of reptiles as true land animals are all except:
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They show internal fertilization.
0%
They are warm-blooded.
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Shell around the egg.
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Horny scale coverd on body.
Explanation
Reptiles are cold-blooded vertebrates
So, the correct answer is option B.
Choose the incorrect statement.
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Balanoglossus
is a worm like marine animal with external fertilization and indirect development
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Urochordates exhibit retrograde metamorphosis
0%
Crocodiles have completely divided for chambered heart
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Male
Macropus
is a mammal exhibiting saltatory locomotion and brood pouch for parental care
Explanation
Correct Option:
A
Explanation:
Annelida
is a phylum that contains worm like marine animal with
external fertilization
and
indirect development.
Balanoglossus
belongs to the phylum
hemichordata
.
In
Urochordates
, the nerve cord and notochord present in the tail of the larve are lost during metamorphosis. This is called
retrogressive metamorphosis
.
In reptiles the ventricles are partly divided by septum but in
crocodiles
and alligators, the heart is completely divided into
four
chambers.
Male
macropus
, also known as, Kangaroo exhibite
saltatory
locomotion and brood pouch, called
marsupium
, for parental care.
Hence, the incorrect statement is:
Balanoglossus
is a worm like marine animal with external fertilization and indirect development.
A chordate having both vertebral column and notochord in adult stage is?
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Branchiostoma
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Rattus
0%
Scoliodon
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Bungarus
Explanation
(A) Branchiostoma
Branchiostoma is one of the few living genera of lancelets. A chordata having both vertebral column and notochord in adult stage is Branchiostoma.
Which of the following is correctly matched?
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Butterfly - Camouflage
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Garden lizard -Mimicry
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House lizard -Autotomy
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None of these
Explanation
Correct Option:
C
Explanation:
Autotomy, also called
self-amputation
, is the ability by which an organism can cast off a part of its body when in threat or danger.
House lizards can break off their tail when grasped by a predator.
Butterflies have adaptations like modification in wing colors that help them escape from predators. The
wing colour
gives the predators fear that they contain some
toxic
substances.
Garden Lizards can change their colour according to the surrounding to
camouflage
from predators.
Hence, the correctly matched pair is:
House lizard -Autotomy.
A true fish among the following is not:
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Dog fish
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Cat fish
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Hag fish
0%
Saw fish
Explanation
The hagfish is a jawless fish and belongs to jawless vertebrates. True fish belong to the jawed vertebrates. The dogfish, catfish, and sawfish belong to the different groups of jawed vertebrates.
Thus, the correct answer is (C).
Which of the following period is known as the age of fishes?
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Ordovician period
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Silurian period
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Devonian period
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Carboniferous period
Explanation
The Devonian
Period
is also known
as the age of fish
. It is b
ecause of the diverse and
abundant types of creatures that swam in the Devonian seas. Forests and the coiled shell-bearing marine organisms known as ammonites
appeared early in the Devonian period.
Which of the following is correct?
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Macropus - Ear pinna, body hairs, $$4$$ chambered heart
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Pavo - Long bones ossified, forelimbs modified to wings
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Ichthyophis - Covering on eyelids, Scales present
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Limulus - Chitinous exoskeleton, $$3$$ pair of legs
Explanation
Mammals can be divided into three more groups based on how their babies develop. These three groups are monotremes, marsupials, and the largest group, placental mammals.
The skin of mammals is unique in possessing hair. In mammals External ears or pinnae are present and 4 chambered heart is seen.
Macropus is a marsupial genus that belongs to the family Macropodidae. It has 13 species which are further divided into 3 subgenera. The genus includes all terrestrial kangaroos, wallaroos, and several species of wallaby.
As Macropus belongs to class Mammalia they are characterized by the presence of Ear pinna, body hairs, and 4 chambered hearts.
So, the correct answer is 'Macropus - Ear pinna, body hairs, 4 chambered heart'.
Notochord present only in its embryonic stage, in _____________.
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Branchiostoma
0%
Sting ray
0%
Scoliodon
0%
Sea Horse
Explanation
In Branchiostoma, Notochord prest only in
its enbryonic stage. It is one of the few
living genera of lancelets. It is the type genus
of family Branchiostomidae. A nothochord is a
Primitive beggining to the backbone.
Which among the following is a true fish?
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Jellyfish
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Starfish
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Dogfish
0%
Silverfish
Explanation
Dogfish is a cartilagenous fish. Jellyfish is a coelenterate, starfish belongs to Echinodermata and silverfish belongs to Arthropoda.
So, the correct answer is '
Dogfish'
.................. are included under protochordata.
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Cephalochordata
0%
Urochordata
0%
Hemichordata
0%
All the the above
Explanation
Protochordates are closely related to vertebrates. These lack some of the peculiar characteristics of chordates like the true skull, brain, skeleton. These are invertebrates. This group is composed of the phylum Hemichordata and the subphylum Urochordata and Cephalochordata.
So, the correct answer is option D.
Write true or false for the following statement:
Reptiles have a three-chambered heart, mammals have a two-chambered heart and fish have a two-chambered heart.
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True
0%
False
Explanation
Reptiles have a three-chambered heart, with two atria and one ventricle. Here, mixing of oxygenated and deoxygenated blood takes place in the ventricle. Crocodile is an exception with four-chambered heart.
Mammals have a four-chambered heart with two atria and two ventricles. The right side of the heart deals with deoxygenated blood while the left side deals with oxygenated blood.
Fish have a two-chambered heart with one atrium and one ventricle and receives only deoxygenated blood.
So, the given statement is 'False'.
Bat is included in which class?
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Amphibia
0%
Reptilia
0%
Aves
0%
Mammalia
Explanation
Bat is adapted to aerial habitat, but, it is not a bird. The bat has membranous wings, body is covered with exoskeleton of hair, ear has ear pinna, are viviparous, bear mammary glands to feed their young. Thus, a bat is a mammal.
So, the correct answer is '
Mammalia'
Some bacteria form a spores in atmosphere; live for
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together
0%
lifespan
0%
Short period
0%
Longer period
Explanation
$$\textbf{Correct option:}$$ $$\textbf{(D)}$$
$$\textbf{Solution:}$$
$$\bullet$$ A microscope can be used to view bacteria in the air.
$$\bullet$$
They are prevalent in the air as resistant spores.
$$\bullet$$
When bacteria are exposed to harsh conditions, they produce spores, which germinate to form new cells in favourable settings.
$$\bullet$$
As a result, they have a longer lifespan.
$$\textbf{Thus the Correct option is (D)}$$
Which one of the following is not a poisonous snake ?
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Cobra
0%
Viper
0%
Python
0%
Krait
Explanation
$$\textbf{Correct option:(C)}$$
$$\textbf{Explanation for correct option:}$$
$$\bullet$$
Python is a non-venomous snake. It kill the prey by crushing them in its coils and slowly squeezing them to death.
$$\textbf{Explanation for incorrect options:}$$
$$\bullet$$ Cobra, Viper and Krait are venomous snakes as they are
capable of injecting venom by their bite. They use venom for defense and killing prey.
Cold blooded animal is
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man
0%
Snake
0%
pigeon
0%
cattle
Explanation
Snakes, like all reptiles, are cold-blooded (also known as ectothermic). This means they regulate their body temperature by lying in the sun to warm up or moving into the shade to cool down.
Animals, such as reptiles, fishes, and amphibians, cannot control their body temperature and therefore are called
cold-blooded animals.
Bats are warm-blooded, meaning they maintain their body temperature internally. But unlike most mammals, bats allow their body temperature to sink to the ambient temperature when they are not active. As their temperature drops, they enter a torpor state, in which their metabolism slows down.
Elephants are warm-blooded mammals that are some of the largest land animals in the world.
Rabbits are mammals, which are also warm-blooded animals.
So, the correct answer is '
Snake'.
Which one of the following has feathers?
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Didelphis
0%
Ornithorhynchus
0%
Tarsier
0%
Hysterics
Explanation
Didelphis
is commonly known as opossums, are members of Didelphimorphia order. This genus is composed of cat-sized omnivorous species and is recognized by their prehensile tails and pale-colored or white skin, fur or feathers. It
is a
tree-dwelling
which found in America.
Thus, the correct answer is A.
Diapsid skull is found in the which of the following organism?
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Natrix, Draco
and Turtle
0%
Crocodile, Turtle and
Seymouria
0%
Sphenodon
, Crocodile and Viper
0%
Calotes
, Cobra and
Varanosaurus
Explanation
Diapsids are a
group of amniote tetrapods that have developed two arches in each side of their skull. The diapsids are extremely diverse group of animals and comprises of crocodiles, lizards, snakes, tuatara (
Sphenodon
), birds and nonavian dinosaurs.
Thus, the correct answer is option C.
At present the Dipnoans are distributed over
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Europe and North America
0%
Latin America and Australia
0%
Europe and Latin America
0%
North America and Australia
Explanation
Dipnoans are freshwater fishes belongs to the order Dipnoi which comprises the lungfishes. Today, lungfish only live in Africa, South America and Australia.
Thus, the correct answer is option B.
Identify the aquatic mammals from the following.
(A)
Balaenoptera
(B)
Equus
(C)
Delphinus
(D)
Pteropoda
(E)
Felis
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(A) and (C) only
0%
(B) and (D) only
0%
(E) only
0%
(D) and (E) only
0%
(B) and (E) only
Explanation
Balaenoptera
is a genus of Balaenopteridae which contains eight species of whales, belonging to the class Mammalia and are aquatic.
Equus
is a genus of mammals in the family Equidae, which includes horses, asses and zebras and are terrestrial animals.
Delphinus
is a genus of mammals that includes dolphins which are the aquatic animals.
Pteropoda
includes sea snails and sea slugs and belong to the phylum Mollusca.
Felis
is a genus of cats, included under the class Mammalia.
Thus, the correct answer is option A.
$$Tachyglossus$$ is a connecting link between
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Reptiles and Aves
0%
Amphibians and Reptiles
0%
Aves and Mammals
0%
Reptiles and Mammals
Explanation
The three genera of monotremes, the duck-billed platypus (
Ornithorhynchus
) and the echidnas or spiny anteaters (
Tachyglossus
and
Zaglossus
) are the most primitive modern mammals. They share certain characteristics of both birds and reptiles which are not seen in other mammals. In particular, the reproductive system consisting of cloaca is similar to the reproductive system in reptiles, ability to lay eggs etc make them more close to reptiles. However, they are hairy endotherms which suckle their young and have a single bony element in the lower jaw making them mammals. Thus, they are considered to be a connecting link between reptiles and mammals. Thus, the correct option is D.
The reptile which lacks penis belongs to
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Ophidia
0%
Crocodilia
0%
Gymnophiona
0%
Rhynchocephalia
Explanation
Rhynchocephalia
is the order that contains two living species and commonly called as tuatara. Externally they look like lizards but internally they are very different. Tuataras have many unique morphological characteristics, such as their feeding apparatus, a cold-adapted physiology, and a particular skull structure. Tuatara males also lack an intromittent penis, and mating is achieved by cloacal apposition. Thus, the correct answer is option D.
Which one of the following is an example of a lung-fish?
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Scoliodon
0%
Coelacanth
0%
Labeo
0%
Protopterus
Explanation
Lung-fishes are freshwater fishe belonging to the subclass
Dipnoi
.
Protopterus
is the genus is the African lungfishes and constitutes four species of lung-fish found in Africa.
Scoliodon
is the genus of shark.
Latimeria
is the genus of Gmbessa french.
Labeo
is the genus of carp.
Thus, the correct answer is option D.
When the tail is cylindrical and control scales do not extend the entire width of belly, the snake is
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Non-venomous
0%
Either venomous or non-venomous
0%
Definitely venomous
0%
Deadly poisonous
Explanation
If the tail of a snake is flat, laterally compressed, it is sea snake and is poisonous. If the tail ends bluntly, it is non-poisonous. If the tail is round cylindrically and pointed, it may be poisonous or non-poisonous.
If the tail is round and not compressed, then examine the ventrals. If the ventrals are small and narrow, it is a non-poisonous snake. In some non-poisonous snakes (like Python), the ventrals are fairly broad but do not extend completely across the belly,
Thus, the correct answer is option A.
Snake has:
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Movable eyelids
0%
No eyelids
0%
Immovable eyelids
0%
Eyelids placed in pouches
Explanation
A)Correct option C
B) Explanation for correct option: C
Absence of limbs for locomotion and the presence of immovable eyelids with a nictitating membrane fused over cornea are the characteristic features of snakes.
Lizard has movable eyelids.
Which of the following statement are true/ false
In Torpedo the electric organs are capable of
generating strong electric shock to paralyze the prey
Bony fishes use pectoral, pelvic, dorsal, anal and
caudal fishes in swimming
Amphibian skin is moist and has thick scales
Birds are poikilothermous animals
The most unique mammalian characteristic is the
presence of milk producing mammary glands by which
the young ones are nourished.
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A ,B and C are true ; D, E are false
0%
A, B and E are true; C and D are false
0%
A ,D and E are true ; B and C are false
0%
A, B and D are false, C and E are false
0%
Only D is true; A, B, C and E are false
Explanation
Torpedo or electric ray has electric organs that are used to generate electric shock to paralyze the prey.
Bony fishes use all the 5 kinds of fins for swimming.
Amphibians do have moist skin but they do not have scales on their body.
Birds are homeothermic and not poikilothermic because they can maintain temperature by homeostasis.
All mammals produce milk from mammary glands to nourish their young ones.
So the correct answer is option "B"
('a, b and e are true, c and d are false.' )
Cinchona quinine was first discovered at
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Portugal
0%
Peru
0%
Poland
0%
Central Asia
Explanation
Quinine is obtained from Cinchona officinalis, C. calisaya bark. Which was first discovered at 'Peru'.
Whale is air breather but can live underwater for a long time because it possesses
Report Question
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Rete mirabile
0%
Small lungs
0%
Blubber
0%
None of the above
Explanation
A complex of arteries and veins lying very close to each other is called as rete mirabile. In whales, a rete mirabile fills the swim bladder with oxygen, increasing the fish's buoyancy. As it stores oxygen, they can stay underwater for long times.
So, the correct answer is option A.
Which of the following is the most closely matching set?
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Cuttle fish, silver fish, hag fish
0%
Man, Chimpanzee, monkey
0%
Bat, pigeon, butterfly
0%
Crab, earthworm, oyster
Explanation
Man, Chimpanzee and Monkey, all these animals are Primate mammals
(Phylum - Chordata, Class - Mammalia, and Order - Primates)
. The following Primate characteristic features are found in all these three animals - cognitive development, flat nails on fingers and toes, grasping adaptation of hands and feet, opposable thumb, forward-facing large eyes, etc.
Among Cuttlefish, Silverfish, and Hagfish - Cuttlefish is a marine cephalopod animal (Phylum - Mollusca); Silverfish is an insect (Phylum - Arthropoda); Hagfish is a jaw-less fish (Phylum - Chordata).
Among Bat, Pigeon, and Butterfly - Bat is a mammal (Phylum - Chordata, and Class - Mammalia); Pigeon is a bird (Phylum - Chordata, and Class - Aves); Butterfly is an insect (Phylum - Arthropoda, and Class - Insecta).
Among Crab, Earthworm, and Oyster - Crab is an arthropod (Phylum - Arthropoda); Earthworm is an annelid worm (Phylum - Annelida); Oyster is a bivalve mollusc (Phylum - Mollusca).
Double vagina is found in
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0%
Monotremata
0%
Eutheria
0%
Marsupials
0%
All of the above
Explanation
The double vagina is a characteristic feature of marsupials like Kangaroo. They have different reproductive organs as compared to the other organism. They have two reproductive tracts. Marsupials give birth to relatively underdeveloped offsprings.
Classify 'Rohu' based on the number of chambers in its heart.
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2 chambered
0%
3 chambered
0%
4 chambered
0%
1 chambered
Explanation
Rohu belongs to Pisces group which has 2 chambered heart (one auricle and one ventricle). In the two chambered heart, mixing of oxygenated and deoxygenated blood takes place. Thus, the correct answer is option A.
Jaw suspension characteristic of mammals is
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0%
Amphistylic
0%
Craniostylic
0%
Autodiastylic
0%
Hyostylic
Explanation
Jaw suspension is the attachment of lower jaw with the upper jaw or attachment of lower jaw with skull bone. Craniostylic is a type of jaw suspension which is a characteristic feature of mammals. In this type of jaw suspension, the lower jaw is attached to the skull bone and pterygoquadrate is transformed into alisphenoid and incus, while Merkel's cartilage is changed into malleus
So, the correct answer is '
Craniostylic'
The mammals were evolved from the reptile in the
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0%
Cretaceous
0%
Triassic
0%
Devonian
0%
Carboniferous
Explanation
Mammals are evolved from the reptiles, during the Triassic period
more than 200 mya.It is the first period of the Mesozoic era. During this period two groups of animals were survived such as therapsids, more mammal-like reptile and archosaurs, more reptilian. Thus, the correct answer is option B.
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