The vertical distribution of different species occupying different levels in a biotic community is known as:
2. stratification
3. zonation
4. pyramid
In which of the following do both pairs have the correct combination?
| 1. | In situ conservation/National park Ex-situ conservation/Botanical garden |
| 2. | In situ conservation/Cryopreservation Ex-situ conservation/Wildlife sanctuary |
| 3. | In situ conservation/Seed bank Ex-situ conservation/ National park |
| 4. | In situ conservation/Tissue culture Ex-situ conservation/Sacred groves |
Secondary succession takes place on/in:
2. degraded forest
3. newly created pond
4. newly cooled lava
The mass of living material at a tropic level at a particular time is called:
2. standing state
3. net primary productivity
4. standing crop
In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:
1. net primary productivity
2. gross primary productivity
3. secondary productivity
4. net productivity
Which of the following characteristics is mainly responsible for the diversification of insects on land:
| 1. | Segmentation | 2. | Bilateral symmetry |
| 3. | Exoskeleton | 4. | Eyes |
Which of the following endoparasites of humans show viviparity?
1. Ancylostoma duodenale
2. Enterobius vermicularis
3. Trichinella spiralis
4. Ascaris lumbricoides
Which of the following represents the correct combination without any exception?
| Characteristic | Class | |
| (a) | Mammary gland; hair on body; pinnae; two pairs of limbs | Mammalia |
| (b) | Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord | Chondrichthyes |
| (c) | Sucking and circular mouth; jaws absent; integument without scales; paired appendages | Cyclostomata |
| (d) | Body covered with feathers; skin moist and glandular; lungs with air sacs; forelimbs form wings | Aves |
| 1. | (a) | 2. | (b) |
| 3. | (c) | 4. | (d) |
2. Elephant
3. Platypus
4. Whale
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