Advertisements
Advertisements
प्रश्न
Vestigial organ ______ present in human body is proof of evolution.
पर्याय
Human hand
Appendix
Ear muscles
Tail-bone
Gradual development
Mutation
Gene
Transcription
Translocation
उत्तर
Vestigial organ appendix present in human body is proof of evolution.
Explanation:
Appendix, which is useless to human, is useful and fully functional organ in ruminants. Similarly, muscles of ear pinna, which are useless to human, are useful in monkeys for movement of ear pinna. Various vestigial organs like tail-bone (coccyx), wisdom teeth, and body hairs are present in body of human being.
Notes
Above question has three possible answers, [Option (B), (C) and (D)].
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
State the connecting links between Peripatus with Annelida and Arthopoda.
Differentiate between homology and analogy. Give one example of each.
(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.
“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.
An example of homologous organs is
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic organs
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
Write short notes based upon the information known to you.
Connecting link
Complete the following chart:
Similarities in the initial stages indicate the _______ evidence.
The decaying process of C-14 occurs continuously in dead organisms only.
Explain any five types of evidence that support the theory of evolution.
How do you differentiate homologous organs from analogous organs?
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Select the CORRECT set of homologous organs.
Where is carbon dating used?
Cucurbits do not develop thick and woody stem as they are:
Basic principles of embryonic development were pronounced by:
Study of fossils is ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
The study of fossil evidence of evolution is called ______
Which of the following is used as an atmospheric pollution indicator?
Analogous organs arise due to ______.
Fossils are generally found in ______.
What were the characteristics of life forms that had been fossilised?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
I am the connecting link of annelida and arthropoda. What is my name?
As shown in figure below some organisms that share a common ancestor have features that have different functions, but similar structures.
These are known as ______. Give example.
Evolutionary convergence is the development of a ______.
Give examples of homologous organs and analogous organs in plants.
Pick the odd man out:
