CBSE Questions for Class 9 Biology Diversity In Living Organisms Quiz 12 - MCQExams.com

Classification allows subsequent identification of a species.
  • True
  • False
Dicondylic skull with ten pairs of cranial nerves are present in __________.
  • Pisces
  • Amphibia
  • Reptelia
  • Mammalia
Fruits are not formed in gymnosperms because:
  • They are seedless.
  • They are not pollinated.
  • The process of fertilization does not occur.
  • They have no ovary.
Which of the following is mismatched?
  • Sponges- spicules
  • Tapeworms- proglottids
  • Cnidaria- nematocysts
  • Roundworms- cilia
Which of the following is not a characteristic of the phylum Annelida?
  • Hydrostatic skeleton
  • Segmentation
  • Pseudocoelom
  • Closed circulatory system
In some chordates, the notochord is modified as the vertebral column. Such animals are called vertebrates. Which one of the following statement make sense?
  • All chordates are vertebrates but all vertebrates are not chordates.
  • All vertebrates are chordates and all chordates are vertebrates.
  • All vertebrates are chordates but all chordates are not vertebrates.
  • Chordates are not vertebrates and vertebrates are not chordates.
Select the incorrect statement with respect to birds.
  • The birds have well-developed sense of sight.
  • The bones of birds are modified for flight.
  • Birds are viviparous animals.
  • All statements are incorrect.
Read the following statement and select the option having correct statements only.
(a) Presence of body hair and mammary gland is characteristic feature of all adult mammals.
(b) Duck-billed platypus is a connecting link between reptiles and mammals.
(c) Prehensile tail is a characteristic of both new world and old world monkey.
(d) There will be no change in the body temperature of Neophron and Macaca if the surrounding temperature changes. 
  • (b) & (d)
  • (a) & (c)
  • (b) only
  • (a), (b), (c), & (d)
An insect differs from a spider in which one of the following ways:
  • Insects have three pairs of legs and two pairs of wings while spiders have four pairs of legs and no wings.
  • Insects have four pairs of legs and a pair of wings while spiders have four pairs of legs and no wings.
  • Insects have three pairs of legs and three pairs of wings while spiders have three pairs of legs and no wings.
  • Insects have four pairs of legs and two pairs of wings while spiders have three pairs of legs and no wings.
Which of the following is not a character of phylum Hemichordata?
  • Presence of stomochord which is mesodermal in origin
  • Excretory organ is proboscis gland
  • Circulatory system is open
  • Respiration takes place through gills
Choose the correct answers from the alternatives given.
Flukes and tapeworms:
  • show cephalization
  • have well-developed reproductive systems
  • have well-developed nervous systems
  • are plant parasites
The characteristics given below are associated with:
(i) Dry and scaly skin
(ii) They do not have external ears.
(iii) Cold-blooded
(iv) Lay eggs
  • Reptiles
  • Birds
  • Amphibians
  • Mammals
'Blood fluke' is the common name of 
  • Fasciola hepatica
  • Schistosoma haematobium
  • Dugesia
  • Taenia solium
The scientific name of fruit fly is
  • Drosophila melanogaster
  • Musca domestica
  • Homo sapiens
  • Ropalidia marginata
Which one of the following statements is correct?
  • Mostly, bacteria are heterotrophic, but some are autotrophic.
  • All bacteria are heterotrophic.
  • All bacteria are autotrophic.
  • All bacteria are photosynthetic.
Mammals are divided into several orders. Which order includes the most advanced mammals?
  • Primates
  • Sirenia
  • Pholidota
  • Cetacea
The shell of a turtle or tortoise is divided into an upper and a lower section. What is the lower section called?
  • Plastron
  • Scute
  • Carapace
  • Subshell
A multicellular, filamentous alga exhibits a type of sexual life cycle in which the meiotic division occurs after the formation of zygote. The adult filament of this alga has?
  • Haploid vegetative cells and haploid gametangia
  • Diploid vegetative cells and diploid gametangia
  • Diploid vegetative cells and haploid gametangia
  • None of these
Bryophytes include
  • liverworts and ferns
  • mosses and ferns
  • mosses and liverworts
  • all of these
Which of the following features is characteristic of birds but not reptiles?
  • Hollow bones
  • Tail
  • Eyes
  • Lay eggs
Read the following statements and select the incorrect one.
  • Cucurbits and coconuts are monoecious plants
  • Papayas and date palms are dioecious plants
  • Leeches and tapeworms are bisexual animals
  • Sponges and coelenterates are unisexual animals
Which of the following match is incorrect with respect to mouth parts in insects ?
  • Biting and chewing type - Grasshopper
  • Siphoning type - Butterfly
  • Piercing and sucking type- Mosquito
  • Sponging and lapping - House Flies
Elephantiasis is caused by: 
  • Earthworm
  • Pinworm
  • Wuchereria
  • Planarians
Roundworms belong to the phylum ________.
  • Nematoda
  • Porifera
  • Platyhelminthes
  • Annelida
Based on what similar characteristics that honeybee and cockroach are included in the same phylum?
  • Wings
  • Three pairs of legs
  • Jointed appendages
  • Antenna
What is the basis of classification of vertebrata into sub groups?
  • Notochord
  • Vertebral column
  • Organs of respiration
  • Organs of reproduction
Find the odd one out.
  • Ant
  • Cockroach
  • Spider
  • Dragonfly
Pigeon's heart has ........... compartments.
  • 1
  • 2
  • 3
  • 4
Why bryophytes are called amphibians of the plant kingdom?
  • Because they can grow on land as well as water.
  • Because these live in soil but require water for fertilization.
  • Both A and B
  • None of the above
Which of the following characters are not found in a cockroach?
  • Compound eyes
  • Two pairs of wings
  • Skin appendages
  • Three pairs of legs with jointed appendages
Name the mammal that lay eggs.
  • Duck-billed platypus
  • Crocodile
  • Birds
  • None of the above
Earthworm belongs to the phylum: 
  • Mollusca
  • Porifera
  • Annelida
  • Arthropoda
If a fungal thallus has both male and female reproductive structure, it will be called __________.
  • Heterothallic
  • Homothallic
  • Dioecious
  • Monoecious
Heart in crocodiles is 
  • Completely $$4$$ chambered
  • Incompletely $$4$$ chambered
  • $$3$$ chambered
  • $$2$$ chambered
The type of dentition in Crocodile is
  • Acrodont
  • Bunodont
  • Pleurodont
  • Thecodont
Which one of the following characteristics of birds indicates the reptilian ancestry?
  • Two special chambers, cro and gizzard in their digestive tract
  • Eggs with a calcareous shell
  • Scales on their hind limbs
  • Four-chambered heart
Multicellular eukaryotic organism with holophytic mode of nutrition belong to how many kingdoms in Whittaker system?
  • One
  • Two
  • Three
  • Five
The process of fragmentation takes place in
  • Flatworms
  • Roundworms
  • Yeast
  • None of these
Parasitic adaptations of  flatworms is:
  • Presence of hooks and suckers
  • Absorption of food through body surface
  • Both 1 and 2
  • Complex digestive system

Which kingdom of the Whittaker classification is not well defined?
  • Monera
  • Protisa
  • Fungi
  • Animalia
21/30 Respiratory organs in aquatic arthropods like cary fish,prawns and molluscus like Unio are
  • Body wall
  • Lungs
  • Traches
  • Gills
Muscular pharynx is a characteristic of ______ phylum.
  • Aschelminthes
  • Annelida
  • Platyhelminthes
  • Both A and B
Some animals develop from three cellular layers. Identify the phylum of these animals from the following. 
  • Annelida
  • Cnidaria
  • Mollusca
  • Porifera
Face of humans is
  • prognathous.
  • orthognathous.
  • hypognathous.
  • epignathous
Thecodont teeth are present in?
a. Sphenodon
b. Crocodiles
c. Mammals
d. Scoliodon.
  • c only
  • b & c only
  • a, b and c only
  • a, b, c & d
Spirogyra exhibits:
  • Haplontic life cycle
  • Diplontic life cycle
  • Haplo-diplontic life cycle
  • Sporophytic plant body
Which of the following is a group of warm blooded animals?
  • Pisces
  • Amphibia
  • Reptilia
  • Aves
How a moth is different from a butterfly?
  • Moth is nocturnal but butterfly is diurnal
  • Moth has feathery antenna but butterfly has club shaped antenna
  • Moth when at rest keeps the wings horizontal but butterfly tend to fold their wings vertically up over their back
  • All of the above differentiates a moth from a butterfly
State whether the following statement is true or false.

Tusks are modified teeth that can tear the bark of the trees.
  • True
  • False
Bat belongs to the class ___________.
  • Amphibia
  • Reptilia
  • Aves
  • Mammalia
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