MCQ
Genetic erosion is due to:
- ADeforestation.
- BShifting cultivation.
- CAdoption of genetically uniform varieties.
- DAll of the above.
Explanation:
Genetic erosion is a process whereby an already limited gene pool of an endangered species of plant or animal diminishes even more when individuals from the surviving population die off without getting a chance to meet and breed with others in their endangered low population.
Low genetic diversity in a population of wild animals and plants leads to a further diminishing gene pool, inbreeding and a weakening immune system and fast tracks that species towards eventual extinction.
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$(A)$ Bears go into ___$(1)$___ during winter to ___$(2)$___ cold weather.
$(B)$ A conical age pyramid with a broad base represents ___$(3)$___ human population.
$(C)$ A wasp pollinating a fig flower is an example of ___$(4)$___ .
$(D)$ An area with high levels of species richness is known as ___$(5)$___ .
Which one of the following options, gives the correct fill ups for the respective blank numbers from $(1) $ to $(5)$ in the statements ?