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Mayank1444

@mayank1444

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Joined: Oct 11, 2021
Last seen: Nov 14, 2021

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Answer to: Life cannot originate from inorganic materials at present because of

Correct answer: (2) a very high amount of oxygen in the atmosphere

4 years ago

Forum

Biology

Answer to: Diversity in the type of beaks of finches adapted to different feeding habits on the Galapagos Islands, as observed by Darwin, provides evidence for

Correct answer: (3) Origin of Species by natural selection

4 years ago

Forum

Biology

Answer to: Which one of the following statements is correct? (1) Neanderthal man is the direct ancestor of Homo sapiens (2) Cro-Magnon man's fossil has been found in Ethiopia

Correct answer: (4) Homo erectus is the ancestor of man

4 years ago

Forum

Biology

Answer to: Which one of the following is regarded as the direct ancestor of modern man?

Correct answer: (2) Homo erectus

4 years ago

Forum

Biology

Answer to: Common origin of man and chimpanzee is best shown by

Correct answer: (2) Banding pattern in chromosomes number 3 and 6

4 years ago

Forum

Biology

Answer to: Which one of the following statements about fossil human species is correct? (1) Australopithecus fossils have been found in Australia

Correct answer: (1) Australopithecus fossils have been found in Australia

4 years ago

Forum

Biology

Answer to: Which one of the following includes all homologous organs? (1) The thoracic leg of cockroach, the hind leg of frog and fore leg of rabbit

Correct answer: (4) The fore limb of frog, wing of bird and forelimb of rabbit

4 years ago

Forum

Biology

Answer to: In general, in the developmental history of a mammalian heart, it is observed that it passes through a two-chambered fishlike heart, three-chambered frog-like heart and finally to four-chambered stage.

Correct answer: (1) Biogenetic Law

4 years ago

Forum

Biology

Answer to: The kind of evolution in which two species of different genealogy come to resemble one another closely, is termed as

Correct answer: (4) convergent evolution

4 years ago

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Biology

Answer to: Identify the correct sequence in which the following substances have appeared during the course of evolution of life on earth

Correct answer: (4) Ammonia, amino acids, proteins, nucleic acids

4 years ago

Forum

Biology

Answer to: Which one of the following sets includes only the vestigial structures in man?

Correct answer: (1) Coccyx, nictitating membrane, vermiform appendix, ear muscles

4 years ago

Forum

Biology

Answer to: Extremities, tail and ear are relatively shorter in animals living in cooler regions as compared to those inhabiting warmer zones. This is

Correct answer: (3) Allen's Rule

4 years ago

Forum

Biology

Answer to: In the evolution of man, several changes occurred in the ancestral characters. Which one of the following changes is irrelevant in this context?

Correct answer: (2) Loss of tail from body

4 years ago

Forum

Biology

Answer to: The earliest fossil form in the phylogeny of Horse is (1) Eohippus (2) Merychippus (3) Equus. (4) Mesohippus

Correct answer: (1) Eohippus

4 years ago

Forum

Biology

Answer to: Two geographical regions separated by high mountains are

Correct answer: (4) Palaearctic and Oriental

4 years ago

Forum

Biology

Answer to: The presence of gill slits, in the embryos of all vertebrates, supports the theory of

Correct answer: (4) recapitulation

4 years ago

Forum

Biology

Answer to: The homologous organs are those that show similarity in

Correct answer: (4) origin

4 years ago

Forum

Biology

Answer to: The closely related morphologically similar sympatric populations, but reproductively isolated, are designated as

Correct answer: (3) sibling species

4 years ago

Forum

Biology

Answer to: Frequency of a character increases when it is (1) inheritable (2) recessive (3) adaptable (4) dominant

Correct answer: (3) adaptable

4 years ago

Forum

Biology

Answer to: Which one does not favour Lamarckian concept of inheritance of acquired characters?

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