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Which of the following developed for the first time in Annelids?
(1) Cephalization
(2) Development of a true coelom
(3) Metameric segmentation
(4) Both 2 and 3

Consider the following characters:
I. Air bladder
II. Operculum
III. Viviparity
The characters present in bony fishes include:
1. I, II and III
2. I and III only
3. I and II only
4. II and III only

Homeothermy is exhibited by:
1. All amniotes
2. Birds and Mammals
3. All deuterostomes
4. Reptiles and Mammals

Consider the following characteristics of Porifers:
1. Collared cells called as choanocytes
2. Canal system with pores (ostia) in body wall
3. Mineral spicules
4. High cellular mobility and totipotency
Which of these can be regarded as synapomorphies of Porifera?

What is the most important reason for the immense success of arthropods?
1. Chitinous exoskeleton
2. Uricotelic nature
3. Compound eye
4. Multipurpose appendages

What is not true for a generalized mollusc?
1. Body segmented into head, visceral mass and foot.
2. A rasping tongue like organ – radula present.
3. Mantle cavity with gills
4. Excretory structures – nephridia

How many of the characters given below are true for echinoderms?
I. An endoskeleton of calcareous ossicles
II. The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical.
III. They are triploblastic and coelomate animals.
IV. Digestive system is complete.
V. Water vascular system
VI. Sexual reproduction, internal fertilization, and direct development.
1. 3
2. 4
3. 5
4. 6

Consider the following sets of some animals. The set that consists of all animals belonging to the same phylum is:
1. Pinctada, Aplysia, Chaetopleura
2. Dentallium, Pila, Echinus
3. Asterias, Antedon, Ascidia
4. Adamsia, Gorgonia, Pleurobrachia

Identify the option where all the columns are not correctly matched:

Birds are not characterized by:
1. Forelimbs modified into wings
2. Fully ossified endoskeleton
3. Skin dry without glands except for oil gland
4. Oviparous and external fertilization

Identify the incorrectly matched pair:

Which of the following is not an arthropod characteristic?
1. Jointed appendages
2. Non-segmented bodies
3. Periodic moulting
4. Articulated exoskeleton

Amniotes include all except:
(1) Amphibians
(2) Reptiles
(3) Birds
(4) Mammals

An important characteristic that hemichordates share with chordates is
(1) absence of notochord
(2) ventral tubular nerve cord
(3) pharynx with gill slits
(4) pharynx without gill slits

Which among these is the correct combination of aquatic mammals?
(1) Seals, Dolphins, Sharks
(2) Dolphins, Seals, Trygon
(3) Whales, Dolphins, Seals
(4) Trygon, Whales, Seals

Choose the correct statements.
(1) All mammals are viviparous
(2) All cyclostomes do not possess jaws and paired fins
(3) All reptiles have a three-chambered heart
(4) All Pisces have gills covered by an operculum

Which one of the following characteristics is not shared by birds and mammals?
(1) Breathing using lungs
(2) Viviparity
(3) Warm blooded nature
(4) Ossified endoskeleton

Select the taxon mentioned that represents both marine and freshwater species
(1) Echinoderms
(2) Ctenophora
(3) Cephalochordata
(4) Cnidaria

A marine cartilaginous fish that can produce electric current is
(1) Pristis
(2) Torpedo
(3) Trygon
(4) Scoliodon

Infection of Ascaris usually occurs by
(1) drinking water containing egg of Ascaris
(2) eating imperfectly cooked pork
(3) tse-tse fly
(4) mosquito bite

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

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
(1) Chordata - possess a mouth provided with an upper and a lower jaw
(2) Chondrichthyes - possess cartilaginous endoskeleton
(3) Mammalia - give birth to young ones
(4) Reptilia - possess 3-chambered heart with one incompletely divided ventricle

One example of animals having a single opening to the outside that serves both as mouth as well as anus is
(1) Octopus
(2) Asterias
(3) Ascidia
(4) Fasciola

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?
1. Penguin is homeothermic while the remaining three are poikilothermic
2. leech is a fresh water form while all others are marine
3. Spongilla has special collared cells called choanocytes, not found in the remaining three
4. All are bilaterally symmetrical

Which one of the following kinds of animals are triploblastic?
(1) Flat worms
(2) Sponges
(3) Ctenophores
(4) Corals

Which one of the following pairs of animal comprises ‘jawless fishes’?
(1) Lampreys and eels
(2) Mackerels and rohu
(3) Lampreys and hag fishes
(4) Guppies and hag fishes

Which one of the following in birds, indicates their reptilian ancestry?
(1) Scales on their hind limbs
(2) Four chambered heart
(3) Two special chambers crop and gizzard in their digestive tract
(4) Eggs with a calcareous shell

Which one of the the following phyla is correctly matched with its two general characteristics?
(1) Arthropoda − Body divided into head, thorax and abdomen and respiration by mouth
(2) Chordata − Notochord at early stage only and separate anal and urinary openings to the outside
(3) Echinodermata − Pentamerous radial symmetry and mostly internal fertilization
(4) Mollusca − Normally oviparous and development through a trochophore or veliger larva

Ascaris is characterised by
(1) absence of true coelom but presence of metamerism
(2) presence of neither true coelom nor metamerism
(3) presence of true coelom but absence of metamerism
(4) presence of true coelom and metamerism (metamerisation)

Which one of the following groups of three animals each is correctly matched with their one characteristic morphological feature?

Which of the following pairs are correctly matched?

(1) A, C and D
(2) B, C and D
(3) Only A and D
(4) Only A and B

What is true about Nereis, Scorpion, Cockroach and Silver fish?
(1) They all have jointed paired appendages
(2) They all possess dorsal heart
(3) None of them is aquatic
(4) They all belong to the same phylum

Which one of the following is a matching set of a phylum and its three examples?
1. Cnidaria − Bonellia, Physalia, Aurelia
2. Platyhelminthes −  Planaria, Schistosoma, Enterobius
3. Mollusca − Loligo, Teredo, Octopus
4. Porifera − Spongilla, Euplectella, pennatula

Metameric segmentation is the characteristic of
(1) Platyhelminthes and Arthropoda
(2) Echinodermata and Annelida
(3) Annelida and Arthropoda
(4) Mollusca and Chordata

In which one of the following sets of animals do all the four give birth to young ones?
(1) Lion, bat, whale, ostrich
(2) Platypus, penguin, bat, hippopotamus
(3) Shrew, bat, cat, kiwi
(4) Kangaroo, hedgehog, dolphin, Loris

Metagenesis refers to
1. the presence of different morphic forms
2. alternation of generation between asexual and sexual phases of an organism
3. occurance of a drastic change in form during post embryonic development
4. the presence of a segmented body and parthenogenetic mode of reproduction
 

Which of these is not a coelenterate?
(1) Sea pen
(2) Sea fur
(3) Sea anemone
(4) Sea lily

Polyp phase is absent in the life cycle of:
(1) Hydra
(2) Hormiphora
(3) Pennatula
(4) Physalia

Which of the following is a fish?
(1) Flying fish
(2) Jelly fish
(3) Devil fish
(4) Star fish

Which of the following Phyla are included in Enterozoa?
(1) Annelida, Mollusca, Porifera
(2) Echinodermata, Hemichordata, Porifera
(3) Mollusca, Arthropoda, Hemichordata
(4) Porifera, Mollusca, Arthropoda

All mammals without any exception are characterised by
(1) viviparity and biconcave red blood cells
(2) extra-abdominal testes and a four chambered heart
(3) heterodont teeth and 12 pairs of cranial nerves
(4) a muscular diaphragm and milk producing glands

Which of the following have porous body and have Cellular Level of Organization?
(1) Aurelia and Obelia
(2) Adamsia and Euplectella
(3) Leucosolenia and Spongilla
(4) Sycon and Hydra

In which of the following sets of organisms, does the external fertilization occur?
1. Echinodermata and mosses
2. Hemichordata and ferns
3. Amphibians and algae
4. Reptiles and gymnosperms

Select the animal that exhibits retrogressive metamorphosis.
(1) Bufo
(2) Amphioxus
(3) Limulus
(4) Herdmania

Which of the following is not a feature of the phylum chordata?
1. Dorsal heart
2. Central nervous system is dorsal
3. Paired pharyngeal gill slits
4. Post anal tail

The presence of notochord in the larval tail is a characteristic of
(1) Doliolum
(2) Branchiostoma
(3) Balanoglossus
(4) Petromyzon

Match the following:

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. (a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)
3. (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i)
4. (a)-(iii), (b)-(iii), (c)-(ii), (d)-(i)

Which of the following is wrong about Coelenterata?
(1) They are aquatic and exclusively marine animals.
(2) Cnidarians exhibit tissue level of organisation and are diploblastic.
(3) Some Cnidarians exhibit two forms namely Polyp and Medusa.
(4) Cnidoblasts are present on tentacles and body.

In sponges, digestion is
1.Intercellular
2.Intracellular
3.Both inter and inter cellular
4.Gastric cavity

Hooks and Suckers are present in
1.All Flatworms
2.Parasitic flatworms
3.Non-parasitic flatworms
4.None of these