Operculum and an air bladder are present in :

  •  Clarias

  •  Pristis

  •  Trygon

  •  Carcohrodon

Identify the incorrectly matched pair:

 

Animals

Feature present in both

1.

Balanoglossus and Pinctada

Open circulatory system

2.

Branchiostoma and Ascidia

Persistent notochord

3.

Aplysia and Pheretima

True coelom

4.

Gorgonia and Pennatula

Cnidoblasts
  • 1
  • 2
  • 3
  • 4

Pteropus is a/an:

  • Limbless amphibian

  • Extinct reptile that evolved into mammals

  • Bony fish that migrates from sea water to fresh water for breeding

  • Mammal with flight

Which of the following is not an arthropod characteristic?

  • Jointed appendages

  • Non-segmented bodies

  • Periodic moulting

  • Articulated exoskeleton

Amniotes include all except:

  • Amphibians

  • Reptiles

  • Birds

  • Mammals

An animal with the following body wall organization will not have:

  • Cephalization

  • Three germ layers

  • Bilateral symmetry

  • A complete digestive tract

Which of the following represents order of 'Horse'?

  • Equidae

  • Perissodactyla

  • Caballus

  • Ferus

An important characteristic that hemichordates share with chordates is

  • absence of notochord

  • ventral tubular nerve cord

  • pharynx with gill slits

  • pharynx without gill slits

Which among these is the correct combination of aquatic mammals?

  • Seals, Dolphins, Sharks

  • Dolphins, Seals, Trygon

  • Whales, Dolphins, Seals

  • Trygon, Whales, Seals

In case of poriferans, the spongocoel is lined with flagellated cells called

  • ostia

  • oscula

  • choanocytes

  • mesenchymal cells

Choose the correct statements.

  • All mammals are viviparous

  • All cyclostomes do not possess jaws and paired fins

  • All reptiles have a three-chambered heart

  • All Pisces have gills covered by an operculum

Which of the following characteristic features always holds true for the corresponding group of animals?

(1)

Viviparous

Mammalia

(2)

Possess a mouth with an upper and a lower jaw

Chordata

(3)   

3-chambered heart with one incompletely divided ventricle   

Reptilia

(4)

Cartilaginous – endoskeleton

Chondrichthyes
  • 1
  • 2
  • 3
  • 4

Which one of the following characteristics is not shared by birds and mammals?

  • Breathing using lungs

  • Viviparity

  • Warm blooded nature

  • Ossified endoskeleton

Which of the following features is not present in the phylum – Arthropoda?

  • Metameric segmentation

  • Parapodia

  • Jointed appendages

  • Chitinous exoskeleton

Select the taxon mentioned that represents both marine and freshwater species

  • Echinoderms

  • Ctenophora

  • Cephalochordata

  • Cnidaria

Which one of the following living organisms completely lacks a cell wall?

  • Cyanobacteria

  • Sea-fan (Gorgonia)

  • Saccharomyces

  • Blue-green algae

Planaria posses high capacity of

  • metamorphosis

  • regeneration

  • alternation of generation

  • bioluminescence

A marine cartilaginous fish that can produce electric current is

  • Pristis

  • Torpedo

  • Trygon

  • Scoliodon

Infection of Ascaris usually occurs by

  • drinking water containing egg of Ascaris

  • eating imperfectly cooked pork

  • tse-tse fly

  • mosquito bite

In which one of the following, the genus name, its two characters and its phylum are not correctly matched, whereas the remining three are correct?

Genus Name   

Two characters

Phylum

(i) Body

segmented

(ii) Mouth

with Radula

Mollusca

(i) Spiny

skinned

(ii) Water

vascular

system

Echinodermata

(i) Pore

bearing

(ii) Canal

system

Porifera

(i) Jointed

appendages

(ii) Chitinous

exoskeleton

Arthropoda

  • Pila

  • Asterias

  • Sycon

  • Periplaneta

What will you look to identify the sex of the following?

  • Male frog – a copulatory pad on the first digit of the hind limb

  • Female cockroach – anal cerci 

  • Male shark – claspers bone on pelvic fins

  • Female Ascaris – sharply curved posterior end

Body having meshwork of cells, internal cavities lined with food filtering flagellated cells

and indirect development are the characteristics of phylum

  • Coelenterata

  • Porifera

  • Mollusca

  • Protozoa

Pleurobrachia is

  • Hermaphrodite

  • Dioecious

  • Bisexual

  • Both 1 and 3

Which of the following is common in Cnidarians and Ctenophora

  • Digestion is both intracellular and extracellular

  • Cnidoblast

  • Only sexual means of reproduction present

  • Metagenesis

Which is not true for Ctenophora

  • Mesoglea is absent

  • Bilateral symmetry

  • Triploblastic

  • All of the above

Which of the following attribute started from Platyhelminthes

  • Organ level of organisation

  • Coelom

  • Segmentation

  • Closed circulatory system

In which one of the following, the genus name, its two characters and its class/phylum are correctly matched?

 

Genus Name   

 

Two characters

Class/Phylum

(1)

Salamandra  

(i)

A tympanum represents ear   

Amphibia

 

 

(ii)   

Fertilization is external

 

(2)

Pteropus

(i)

Skin possesses hair

Mammalia

 

 

(ii)

oviparous

 

(3)

Aurelia

(i)

Cnidoblasts

Coelenterata

 

 

(ii)

Organ level of organization

 

(4)

Ascaris

(i)

Body segmented

Annelida

 

 

(ii)

Males and Females distinct

 
  • 1
  • 2
  • 3
  • 4

One example of animals having a single opening to the outside that serves both as mouth as well as anus is

  • Octopus

  • Asterias

  • Ascidia

  • Fasciola

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

  • Penguin is homeothermic while the remaining three are poikilothermic

  • leech is a fresh water form while all others are marine

  • Spongilla has special collared cells called choanocytes, not found in the remaining three

  • All are bilaterally symmetrical

Which one of the following kinds of animals are triploblastic?

  • Flat worms

  • Sponges

  • Ctenophores

  • Corals

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