Advertisements
Advertisements
प्रश्न
Define the evidence of evolution shown in the figure.

Advertisements
उत्तर
The evidence of evolution indicated in the given diagram is vestigial organ.
Vestigial organs: Vestigial organs are useless organs that are degenerated or underdeveloped due to non-functionality through several years.
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Human tailbone is a vestigial organ. Explain.
Select and write analogous structures from the list given below :
1) Wings of butterfly and birds
2) Vertebrate hearts
3) Tendrils of Bougainvillea and Cucurbita
4) Tubers of sweet potato and potato
The forelimbs of a frog, a bird and a man show the same basic design (or basic structure) of bones. What name is given to such organs?
Name two animals having homologous organs and two having analogous organs. Name these organs.
In a class, students were asked to observe the models/slides/pictures of the skeletons of forelimbs and wings of different organisms. After the observations the students made the following groups of homologous structures. Select the correct group :
(A) Wings of a bird and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a butterfly and a bat
(D) Forelimbs of a cow, a duck and a lizard
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
Appendix : vestigial organ : : Peripatus : ____________
Write a short note:
Embryological evidences
Complete the flowchart.

Explain any five types of evidence that support the theory of evolution.
Biogenetic law states that ______.
Select the CORRECT match.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Animal husbandry and plant breeding programmes are the examples of ______.
Define Palaeontology.
