Homologous organs represent the divergent evolution. These are the organs belonging to different organisms of different species may be for dissimilar function but they all have the same basic structure. On the other hand vestigial organs show that how a species evolved from its ancestors through the ages according to the use and disuse of organs. These are the organs which were sometime functional in humans (or may be any other organisms) but during the course of evolution their utility gradually decline and now they are present as non-functional and vestigial organs.

Correct Option: D

Homologous organs represent the divergent evolution. These are the organs belonging to different organisms of different species may be for dissimilar function but they all have the same basic structure. On the other hand vestigial organs show that how a species evolved from its ancestors through the ages according to the use and disuse of organs. These are the organs which were sometime functional in humans (or may be any other organisms) but during the course of evolution their utility gradually decline and now they are present as non-functional and vestigial organs.

Animals resist predation by cryptic coloration deceptive marking, behavioural defenses and possession of mechanical or chemical defenses. Examples are colour change in Chameleon Enlargement of body size by swallowing air in potter fish, Melanism in moths.

Correct Option: C

Animals resist predation by cryptic coloration deceptive marking, behavioural defenses and possession of mechanical or chemical defenses. Examples are colour change in Chameleon Enlargement of body size by swallowing air in potter fish, Melanism in moths.

Spallanzani’s experiment: He boiled the meat and vegetables for more than an hour to prepare broth and placed them in open and sealed flasks. The maggots of housefly developed in the open flasks but did not appear in sealed flasks. This disapproved the theory of spontaneous creation. (Th. of abiogenesis).

Correct Option: D

Spallanzani’s experiment: He boiled the meat and vegetables for more than an hour to prepare broth and placed them in open and sealed flasks. The maggots of housefly developed in the open flasks but did not appear in sealed flasks. This disapproved the theory of spontaneous creation. (Th. of abiogenesis).

Pisum sativum - Mendel Drosophila melanogaster - T. H. Morgan.

Correct Option: C

Pisum sativum - Mendel Drosophila melanogaster - T. H. Morgan.

Amphibians have moved onto terrestrial habitat but they still need to go back to water for reproduction. The presence of gills in tadpole indicate that amphibians have evolved from fishes. Fishes are completely aquatic so the other three options are incorrect.

Correct Option: D

Amphibians have moved onto terrestrial habitat but they still need to go back to water for reproduction. The presence of gills in tadpole indicate that amphibians have evolved from fishes. Fishes are completely aquatic so the other three options are incorrect.