Assertion Reason Test: Evolution - NEET MCQ

A: During industrialisation dark-winged or melanised moths were more abundant.

R: They were able to camouflage themselves, hide in the background and survived.

A: Tyrannosaurus rex had fearsome dagger-like teeth.

R: Tyrannosaurus was the largest dinosaur depending upon herbs and shrubs.

A: During evolution, the early time period was without an ozone layer.

R: Ozone layer absorbs U.V. rays to some extent.

A: Theory of biogenesis explains that life arises from pre-existing life.

R: Louis Pasteur finally disapproved of the theory of spontaneous generation of life.

A: India falls under oriental realm out of other biogeographical realms.

R: World is divided into six biogeographical realms.

A: Archaeopteryx had free caudal vertebrae and toothed beak with teeth like reptiles.

R: It is missing the link between reptiles and birds.

A: Placental wolf and Tasmanian wolf (a marsupial) show convergent evolution.

R: Like marsupials, placental mammals in other parts of the world also exhibit adaptive radiation in evolving into varieties of such placental mammals, each of which appears to be similar to a corresponding marsupial.

A: There is 99% homology in the haemoglobin of man and Gorilla.

R: Modern man is a direct descendent of Gorilla.

A: Many countries have banned the use of antibiotics in the cattle feed.

R: Dairymen give antibiotics in the feed to the cattle, and it becomes breeding grounds for the antibiotic-resistant bacteria.

A: Lycaenops is a connecting link between reptiles and mammals.

R: In the Permian period there was the origin of mammal-like reptiles.

A: Blood group analysis shows human beings are more closely related to apes than to monkeys.

R: The blood groups A and B are found in apes, but not in monkeys.

A: Due to bottleneck effect, among the survivors, certain alleles may be over-represented, some may be underrepresented, and some alleles may be totally eliminated.

R: The path of extinction of a species cannot be reversed due to bottleneck effect.

A: Spotted cuscus and marsupial mole are examples of marsupial radiation.

R: Both are found in Australian region.

A: Similarities in proteins and genes performing a given function among diverse organisms give clues to common ancestry.

R: All the group of vertebrates arises from the common ancestor with great adaptation capability.

A: Sometimes, some babies have a small tail.

R: This is just a type of mutant variety.

A: Muscles of external ears are fully developed in humans.

R: These muscles help in moving ear pinna in humans.

A: A single large mutation called saltation can produce new species.

R: Mutations are directional.