Q. No.Which one of the following pairs of items correctly belong to the category of organs mentioned against it?
1. Nephridia of earthworm and malpighian tubules of cockroach - excretory organs.
2. Wings of honey bee and wings of crow - homologous organs
3. Thorns of Bougainvilea and tendrils of Cucurbita - analogous organs
4. Nictitating membrane and blind spot in human eye - vestigial organs
1. Nephridia of earthworm and malpighian tubules of cockroach - excretory organs.
2. Wings of honey bee and wings of crow - homologous organs
3. Thorns of Bougainvilea and tendrils of Cucurbita - analogous organs
4. Nictitating membrane and blind spot in human eye - vestigial organs
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Which one of the following phyla is correctly matched with its two general characteristics?
1. Echinodermata - pentamerous radial symmetry and mostly internal fertilization
2. Mollusca - normally oviparous and development through a trochophore or veliger larva
3. Arthropoda - body divided into head, thorax and abdomen and respiration by mouth
4. Chordata - notochord at some stage, separate anal and urinary openings to the outside
Which group of animals belong to the same phylum?
1. Earthworm, Pinworm, Tapeworm
2. Prawn, Scorpion, Locusta
3. Sponge, Sea anemone, Starfish
4. Malarial parasite, Amoeba, Mosquito
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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. | Ascaris | (a) (b) |
Body segmented Males and females distinct |
Annelida |
| 2. | Salamandra | (a) (b) |
A tympanum represents ear Fertilization is external |
Amphibia |
| 3. | Pteropus | (a) (b) |
Skin possesses hair Oviparous |
Mammalia |
| 4. | Aurelia | (a) (b) |
Cnidoblasts Organ level of organization |
Coelenterata |
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Match the name of the animal (column I), with one characteristics (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 |
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Which of the following statements is not true about Nematodes?
1. They are bilaterally symmetrical, un-segmented worms
2. They are covered with a flexible, thick cuticle that is molted four times as they grow
3. They possess cilia or flagella on their reproductive cells
4. They possess a hydrostatic skeleton
Radially symmetrical animals:
1. Are all triploblastic
2. Tend to be sessile and passively floating
3. Have a definite head and a brain
4. Have an anterior and a posterior end
Perhaps the biggest reason for the enormous success of Arthropods is?
| 1. | Chitinous exoskeleton | 2. | Diverse appendages |
| 3. | Respiration by tracheoles | 4. | Internal fertilization |
Approximately what percentage of existing animal species are invertebrates?
| 1. | 20% | 2. | 50% |
| 3. | 70% | 4. | 95% |
Which one of the following statements is incorrect?
| 1. | In cockroaches and prawns, excretion of waste material occurs through malpighian tubules. |
| 2. | In ctenophores, locomotion is mediated by comb plates. |
| 3. | In Fasciola flame cells take part in excretion. |
| 4. | Earthworms are hermaphrodites and yet cross fertilization take place among them. |
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