Assertion: Some animals, particularly ruminants and termites, can digest cellulose.
Reason: They can produce cellulose.
1. Both assertion and reason are true and the reason is the correct explanation of the assertion.
2. Both assertion and reason are true but the reason is not the correct explanation of the assertion.
3. Assertion is true but reason is false.
4. Both assertion and reason are false
Metameric segmentation is the characteristic of
| 1. | Mollusca and chordata |
| 2. | Platyhelminthes and arthropoda |
| 3. | Echinodermata and annelida |
| 4. | Annelida and arthropoda |
Biradial symmetry and lack of cnidoblasts are the characteristics of
1. Hydra and starfish
2. Starfish and sea anemone
3. Ctenoplana and Beroe
4. Aurelia and Paramoecium
Which one of the following is not a living fossil?
1. Peripatus
2. King crab
3. Sphenodon
4. Archaeopteryx
In which one of the following sets of animals, all the four, give birth to young ones?
| 1. | Kangaroo, hedgehog, dolphin, loris |
| 2. | Lion, bat, whale, ostrich |
| 3. | Platypus, penguin, bat, hippopotamus |
| 4. | Shrew, bat, cat, kiwi |
Earthworms have no skeleton but during burrowing, the anterior end becomes turgid and acts as a hydraulic
skeleton. It is due to
1. Gut peristalsis
2. Setae
3. Coelomic fluid
4. Blood
Which one of the following is not a characteristic of phylum Annelida?
1. Pseudocoelom
2. Ventral nerve cord
3. Closed circulatory system
4. Segmentation

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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 |

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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 one of the following groups of animals is bilaterally symmetrical and triploblastic?
1. Sponges
2. Coelenterates (cnidarians)
3. Aschelminthes (round worms)
4. Ctenophores

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