Question

20) Members of a population do not vary at all in their characteristics; most individuals within a population are exactly alike

(A) True (B) False

21) Often, organisms with specialized adaptations for their environment tend to leave more offspring that successfully reproduce in the next generation

(A) True (B) False

22) Which could be an example of an Adaptive Radiation?

A) a burst of new species in a new habitat where selective pressure is different from an ancestral habitat, like has been noticed for “Darwin’s Finches” The Cichlid Fishes and numerous examples from the fossil record.

B) HUMAN domestication of wild plants into crop plants due to selectively breeding plants with desirable characteristics over thousand of years

C) Descent with modification and natural selection

23) Which is an example of Artificial selection?

A) A burst of new species in a new habitat where selective pressure is different from an ancestral habitat

B) HUMAN domestication of wild plants into crop plants due to selectively breeding plants with desirable characteristics over thousand of years

C) Descent with modification and natural selection

Answer 1

20. The given statement is false because a considerable about of variation is present within a population. This is due to the different combinations of recessive, dominant alleles, quantitative traits etc.

21. The given statement is true. Organisms that have a specialized adaptation to a particular environment are more likely to survive and stay healthy. Such organisms are more capable of reproducing and producing a larger number of offspring.

22. Option (A) is the best example of adaptive radiation. Adaptive radiation is a process in which an ancestral species gives rise to many different species under different environmental conditions and selection pressures.

23. Option (B) is the best example of artificial selection. Artificial selection is the intentional selection of certain plants and animals with beneficial traits and breeding them under controlled conditions.