Which one of the following correctly describes the homologous structures?A. Organs with anatomical similartities, but performing different functions.B. Organs with anatomical dissimilarities, but performng same function.C. Organs that have no function now, but had an important function in ancestors.D. Organs appearing only in embryonic stage and disappearing later in the adult.

Which one of the following correctly describes the homologous structur

1.	Which one of the following correctly describes the homologous structures?A. Organs with anatomical similartities, but performing different functions.B. Organs with anatomical dissimilarities, but performng same function.C. Organs that have no function now, but had an important function in ancestors.D. Organs appearing only in embryonic stage and disappearing later in the adult.
Answer» Correct Answer - A Homologous organs are those organs that have the same fundamental structures but are different in functions. These organs follow the same basic plan of oraganisation during their development. But in adult condition, these organs are modified to perform different functions as a result of divergent evolution. Homology indicates common ancestry.

Discussion

No Comment Found

Related InterviewSolutions

In evolution of horse, two most important anatomical and morphological changes brought about areA. Limbs and tailB. Limbs and heightC. Limbs and teethD. Teeth and tail
Archeopteryx a transitional fossil between birds and reptiles was discovered from the rocks of following periodA. JurassicB. Archeozoic eraC. CretaceousD. Triassic
Assertion: Genetic drift refers to changes in the allele frequency occuring by chance. Reason: Sampling errors often lead to the elimination of certain alleles and fixation of others, reducing genetic variability.
Name the specific terms being used for the following statements : (a)The chance elimination of the genes of certain traits when a section of population migrates or dies of natural calamity is referred to as ….. (b)Change in the morphology and number of chromosomes at times is referred to as ... (c )A small group of human beings leave their homes to find a new settlement. This result in the formation of a different genotype in new settlement. It is called ...
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, becauseA. One organism has given rise to anotherB. They share a common ancestorC. They perform the same functionD. They have biochemical similarities
How do closely related species of alligators, at present , occur only in South-eastern United States Eastern China ? Explain
According to Darwin, diversity as found in Australian marsupials is due toA. Convergent evolutionB. Adaptive radiationC. Parallel rediationD. Parallel evolution
At Australian marsupials evolved in theA. AfricaB. Galapagos islandsC. Australian continentD. North America
Chance elimination of the genes of certain traits in the event of migration or death of section of population by natural calamity is called _____
Australia has egg-lying and pouched mammals that occur nowhere else. How can it be explained by evolutionists ?

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment