Which of the following is wrong about Coelenterata?
They are aquatic and exclusively marine animals.
Cnidarians exhibit tissue level of organisation and are diploblastic.
Some Cnidarians exhibit two forms namely Polyp and Medusa.
Cnidoblasts are present on tentacles and body.
Which of the following are correctly matched with respect to their taxonomic classification?
Centipede, millipede, spider, scorpion-Insecta
House fly, butterfly, tsetse fly, silverfish-Insecta
Spiny anteater, sea urchin, sea cucuber- Echinodermata
Flying fish, cuttle fish, silverfish- Pisces
One of the representatives of phylum Arthropoda is:
Silverfish
Pufferfish
Flying fish
Cuttlefish
Which of the following attribute is false about Ctenophores
Radial symmetry
Diploblastic
All germ layers are present
Tissue level of Organisation
Which of the following is well marked in Ctenophores?
Comb plates
Tentacles
Bioluminiscence
Diploblastic body plan
Which of the following is true about digestion of Ctenophores?
Extracellular digestion
Intracellular digestion
Both 1 and 2
Neither Intracellular nor Extracellular
Which of the following is true about Ctenophores?
Reproduction takes place by sexual means only
Fertilisation is external
Indirect development
All of these
Which of the following developed for the first time in Annelids?
Cephalization
Development of a true coelom
Metameric segmentation
Both 2 and 3
Consider the following characters:
I. Air bladder
II. Operculum
III. Viviparity
The characters present in bony fishes include:
I, II and III
I and III only
I and II only
II and III only
Homeothermy is exhibited by:
All amniotes
Birds and Mammals
All deuterostomes
Reptiles and Mammals
Consider the following characteristics of Porifers:
Which of these can be regarded as synapomorphies of Porifera?
Collared cells called as choanocytes
Canal system with pores (ostia) in body wall
Mineral spicules
High cellular mobility and totipotency
Match Nematode with their common names and choose answer from codes given below:
Nematode
Common names
I.
Ancylostoma duodenale
1.
Pin worm
II.
Enterobius vermicularis
2.
Filaria worm
III.
Trichuris trichiura
3.
Loa loa
IV.
Dracunculus medinensis
4.
Whip worm
V.
Onchocerca volvulus
5.
Hook worm
VI.
Wuchereria bancrofti
6.
Guinea worm
Codes:
5
6
2
4
3
1
What is the most important reason for the immense success of arthropods?
Chitinous exoskeleton
Uricotelic nature
Compound eye
Multipurpose appendages
What is not true for a generalized mollusc?
Body segmented into head, visceral mass and foot.
A rasping tongue like organ – radula present.
Mantle cavity with gills
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.
Which of the following is not seen in hemichordates?
A tripartite body organization
Stomochord
Rudimentary notochord
Proboscis gland
Consider the following features:
I. Ampulla of Lorenzini
II. Operculum or gill cover
III. Ureotelism
IV. Viviparity
V. Swim bladder
VI. Lateral line system
The features that can be attributed to cartilaginous fishes are:
I, III and IV only
II, V and VI only
I, II, III and IV
All
Key features that appeared for the first time in amphibians do not include:
Legs
Nutritional deficiencies
Lungs
Pulmonary veins
I. Wish bone furculum
II. Pneumatic bones
III. Feathers
IV. Endothermy
V. Left aortic arch
VI. Four chambered heart
Which of these are unique to birds?
I, II and III only
I, II, III and IV only
I, II, III, IV and V only
Identify the incorrectly matched pair
Ornithorhynchus:
Oviparous mammal
Macropus:
Marsupial mammal
Balaenoptera:
Largest land mammal
Pteropus:
Flying mammal
A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is
Eptatretus
Myxine
Neomyxine
Petromyzon
Metagenesis refers to
the presence of different morphic forms
alternation of generation between asexual and sexual phases of an organism
occurance of a drastic change in form during post embryonic development
the presence of a segmented body and parthenogenetic mode of reproduction
Match each item in Column I with one item in Column II and chose your answer from the codes given below:
Column I
Feature
Column II
Phylum
(a) Lateral line system
(b) Water vascular system
(c) Radula
(d) Comb plates
(e) Parapodia
(i) Ctenophora
(ii) Mollusca
(iii) Echinodermata
(iv) Osteichthyes
(v) Annelida
Codes
(a) (b) (c) (d) (e)
(i) (ii) (iii) (iv) (v)
(iv) (iii) (ii) (i) (v)
(v) (iii) (i) (iv) (ii)
(iii) (ii) (i) (v) (iv)
Reptiles were very successful on land while amphibians were not. What evolutionary development was primarily responsible for the success of reptiles on land?
Scales over skin
Thoracic breathing
Amniotic egg
Strong Jaws
Which of the following is not a feature of Tunicates?
Only the larvae have notochord
Presence of endostyle
Secretion of cellulose sac
Larvae are voracious eaters
Consider the following sets of some animals. The set that consists of all animals belonging to the same phylum is:
Pinctada, Aplysia, Chaetopleura
Dentallium, Pila, Echinus
Asterias, Antedon, Ascidia
Adamsia, Gorgonia, Pleurobrachia
Identify the option where all the columns are not correctly matched:
Which of the following is not an Echinoderm character?
Exclusively marine
Radial symmetry in adults
Protostome embryonic development
Water vascular system
Birds are not characterized by:
Forelimbs modified into wings
Fully ossified endoskeleton
Skin dry without glands except for oil gland
Oviparous and external fertilization
Echinoderms are not characterized by:
An absence of excretory system
Bisexual animals
Usually external fertilization
Indirect development with free swimming larva
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