CSIR NET Questions on Evolution

The origin and diversification of Angio- sperms was during which geological period? (CSIR_2015_II)

Orchids of the genus Cryptostylis are known to maintain reproductive isolation because their flowers look and smell like females of the wasps of genus Lissopimpla. When the male wasp visits and attempts to mate with the flower, the shape of anther and stigma allows correct placement and transfer of pollen to the wasp, which then transfers the pollen to species specific flower that it next attempts to mate with. This prezygotic barrier that prevents inter-species cross-pollination in Cryptostylis is best explained by: (CSIR_2017_II)

Which one of the following statements is NOT TRUE about homologous characters? (CSIR_2017_II)

Which one of the following statements is NOT TRUE about the Neutral Theory as proposed by Motoo Kimura? (CSIR_2017_II)

Fossils of the same species of fresh water reptiles have been found in South America and Africa. Based on the current understanding, which of the following is the best possible explanation for this pattern? (CSIR_2016_I)

During which of the following major mass extinction events, over 95% of the marine species disappeared from the planet Earth? (CSIR_2016_I)

Which of the following is NOT an attribute of a species that makes it vulnerable to extinction? (CSIR_2016_I)

There are three species of frogs – A, B and C. Species A does not provide parental care for its eggs and larvae. Species B is subjected to predation by a predator that selectively feeds only on small-sized larvae. Species C faces progressively decreasing opportunities for breeding with increasing age. Assuming that resources available for reproduction are similar for A, B and C, which of the following strategies would have been favored? (CSIR_2015_I)

Assume that in terms of ‘genetic fitness’ the ‘benefit’ of performing an altruistic act to a relative is 500 units and the ‘cost’ involved is 150 units. Following Hamilton’s rule, the act should be performed fi the relative is a: (CSIR_2015_I)

Which one of the following conditions is NOT likely to favour male monogamy? (CSIR_2015_II)

Which of the following statements about evolution is NOT true? (CSIR_2015_II)

Individual A can derive ‘fitness’ benefit of 160 units by helping Individual B, but incurs a ‘fitness’ cost of 50 units in doing so. Following Hamilton’s Rule, A should help B ONLY if B is his: (CSIR_2015_II)

The “Red Queen Hypothesis” is related to: (CSIR_2015_II)

Which of the following is NOT a prediction arising out of Wilson-MacArthur’s Theory of Island Biogeography? (CSIR_2016_I)