Synthesis of organic molecules from simple molecules is no longer possible because of the oxidizing atmosphere.

Correct Option: A

Synthesis of organic molecules from simple molecules is no longer possible because of the oxidizing atmosphere.

During industrial revolution in England the frequency of melanic forms of species of Peppered Moth (Biston betularia) increased in polluted areas. Generally the moths are light coloured. This change in colour is known as "Industrial melanism". The change was presumed to be a result of natural selection since the melanic moths better matched the blackened tree trunks where they rest during day.

Correct Option: A

During industrial revolution in England the frequency of melanic forms of species of Peppered Moth (Biston betularia) increased in polluted areas. Generally the moths are light coloured. This change in colour is known as "Industrial melanism". The change was presumed to be a result of natural selection since the melanic moths better matched the blackened tree trunks where they rest during day.

Organs that are similar in fundamental structure but different in functions are “Homologous organs”, Richard Owen, introduced the term homologous. Pectoral fins of fish and fore limbs of horse similar in structure but different in functions are homologous organs. Rest of the organs compared in the question are analogous organs.

Correct Option: C

Organs that are similar in fundamental structure but different in functions are “Homologous organs”, Richard Owen, introduced the term homologous. Pectoral fins of fish and fore limbs of horse similar in structure but different in functions are homologous organs. Rest of the organs compared in the question are analogous organs.

Biogeography is the study of geographical distribution of organisms. Paleontology is the study of past life based on fossils and fossil impressions. Anatomy is the study of internal structure. Embryology is the study of development of embryo from zygote till it becomes an offspring.

Correct Option: A

Biogeography is the study of geographical distribution of organisms. Paleontology is the study of past life based on fossils and fossil impressions. Anatomy is the study of internal structure. Embryology is the study of development of embryo from zygote till it becomes an offspring.

Homeotic genes are the group of genes involved in the embryonic development and control the pattern of body formation. Alleination in these gene found in flies like Drosophila result in development of legs in place of wings.

Correct Option: A

Homeotic genes are the group of genes involved in the embryonic development and control the pattern of body formation. Alleination in these gene found in flies like Drosophila result in development of legs in place of wings.