Q. No.What percent of earth’s area is covered by hotspots of biodiversity?
1. less than 2 2. about 7 3. about 11 4. more than 16
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According to your NCERT text, the number of biosphere reserves, national parks and wildlife sanctuary in India are respectively:
| 1. | 14, 90 and 448 | 2. | 11, 98 and 440 |
| 3. | 15, 101 and 403 | 4. | 13, 92 and 427 |
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Which of the following is an in-situ strategy to conserve biodiversity?
| 1. | Seed bank | 2. | National park |
| 3. | Cryopreservation | 4. | Botanical garden |
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If the threat of extinction is high, the preferred strategy for the conservation of this threatened species would be:
| 1. | In-situ conservation | 2. | Ex-situ conservation |
| 3. | Either of the two | 4. | Neither of the two |
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Agricultural biodiversity is conserved:
1. in ex-situ locations commonly in the form of gene banks
2. in ex-situ locations commonly in botanical gardens
3. in in-situ locations such as biosphere reserves
4. in in-situ locations in agricultural institute fields
The agricultural practice of producing or growing a single crop, plant or livestock species, variety, or breed in a field or farming system at a time is called as:
1. Monoculture
2. Polyculture
3. Oligoculture
4. Agriculture
The reasons to store seeds in a seed bank include all except:
1. To have available the genes that plant breeders need to increase yield, disease resistance, drought tolerance, nutritional quality, taste, etc. of crops.
2. To forestall loss of genetic diversity in rare plant species in an effort to conserve biodiversity ex-situ.
3. To preserve the historical and cultural value of plants not grown now.
4. To guard against biopiracy by limiting the use of seeds only in certain areas.
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Recalcitrant seeds are:
1. seeds that do not survive drying and freezing during ex-situ conservation
2. seeds that can resist the effects of drying or temperatures less than 10 °C
3. can be stored for long periods
4. terminator seeds
Freezable specimens that can be preserved with cryopreservation include all except:
| 1. | Semen | 2. | Seeds |
| 3. | Early embryos | 4. | Human heart |
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