Which of the following characteristic features always hold true for the corresponding group of animals?
(a)
Viviparous
(1)
Mammalia
(b)
Possess a mouth with an upper and a lower jaw
(2)
Chordata
(c)
3- chambered heart with one incompletely divided ventricle
(3)
Reptilia
(d)
Cartilaginous - Endoskeleton
(4)
Chondrichthyes
1. a
2. b
3. c
4. d
2. Blue whale
3. Sea-horse
4. Gangetic shark
Which of the following characteristics is mainly responsible for the diversification of insects on land:
2. Bilateral symmetry
3. Exoskeleton
4. Eyes
1. Earthworm, Pinworm, Tapeworm
2. Prawn, Scorpion, Locusta
3. Sponge, Sea anemone, Starfish
4. Malarial parasite, Amoeba, Mosquito
Match the name of the animal (Column I), with one characteristic (Column II), and the phylum/class (Column III) to which it belongs:
| Column I | Column II | Column III | |
| 1. | Ichthyophis | terrestrial | Reptilia |
| 2. | Limulus | body covered by chitinous exoskeleton | Pisces |
| 3. | Adamsia | radially symmetrical | Porifera |
| 4. | Petromyzon | ectoparasite | Cyclostomata |
Which of the following are correctly matched with respect to their taxonomic classification?
| 1. | Centipede, millipede, spider, scorpion-Insecta |
| 2. | House fly, butterfly, tsetse fly, silverfish-Insecta |
| 3. | Spiny anteater, sea urchin, sea cucumber- Echinodermata |
| 4. | Flying fish, cuttlefish, silverfish- Pisces |
One of the representatives of the phylum Arthropoda is:
1. Silverfish
2. Pufferfish
3. Flying fish
4. Cuttlefish
In which one of the following the genus name, its two characters and its class/phylum are correctly matched?
| Genus | Two Characters | Class/phylum |
| (a) Salman dra | (i) A tympanum represents ear (ii) Fertilisation is external |
Amphibia |
| (b) Pteropus | (i) Skin possesses hair (ii) Oviparous |
Mammalia |
| (c) Aurelia | (i) Cnidobles (ii) organ level of Organisation |
Coelenterata |
| (d) Ascaris | (i) Body segmented (ii) Males and Female distinct |
Annelida |
2. (b)
3. (c)
4. (d)
| 1. | absence of true coelom but the presence of metamerism |
| 2. | presence of neither true coelom nor metamerism |
| 3. | presence of true coelom but the absence of metamerism |
| 4. | presence of true coelom and metamerism (metamerisation) |
Which one of the following has an open circulatory system?
1. Pheretima
2. Periplaneta
3. Hirudinaria
4. Octopus
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