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प्रश्न
Define the evidence of evolution shown in the figure.
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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.
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संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
(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.
How do homologous organs help in providing evidence for organic evolution?
Differentiate between analogous and homologous structures.
The presence of which of the following types of organs in two organisms indicates that they are derived from the same ancestor?
(a) analogous organs
(b) respiratory organs
(c) digestive organs
(d) homologous organs
The wings of a housefly and the wings of a sparrow are an example of :
(a) analogous organs
(b) vestigial organs
(c) respiratory organs
(d) homologous organs
X, Y, and Z are three animals. The animal X can fly but animal Y can only run on ground or walls. The forelimbs of animals X and Y have the same basic design but they are used for different purposes such as flying and running respectively. The animal Z became extinct an long time ago. The study of fossils of Z tells us that it had some features like those of X and some like those of Y. In fact, Z is said to form a connecting link in the evolutionary chain of X and Y.
(a) What could the animals X, Y and Z be?
(b) What name is given to the forelimbs like those of X and Y which have the same basic design but different functions?
(c) Name one feature in which Z resembled X.
(d) Name one feature in which Z resembled Y.
(e) Which is the correct evolutionary chain involving X, Y and Z : X → Z → Y or Y → Z → X?
Vestigial organ ______ present in human body is proof of evolution.
Complete the following chart:
Define fossil.
What are homologous structures?
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Explain the importance of Anatomical evidences with examples.
Find an odd one out.
Find an odd one out.
I am a connecting link between reptiles and mammals. Who am I?
Name the parts shown in the diagram.
Human jaw
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
Biogenetic law states that ______.
Select the correct statement.
Select the CORRECT set of homologous organs.
Which of these is not a vestigial organ in human beings?
Why do all the gametes formed in human females have an X chromosome?
Cucurbits do not develop thick and woody stem as they are:
Palaeontological evidence for evolution refers to the ______.
Study of fossils is ______.
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
Which of the following is used as an atmospheric pollution indicator?
What were the characteristics of life forms that had been fossilised?
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
Give an example for convergent evolution and identify the features towards which they are converging.
How do we compute the age of a fossil?
What is the function of the appendix of our digestive system?
Evolutionary convergence is the development of a ______.
Write a note on the significance of Palaeontology.
Industrial melanism was highlighted by ______.
Industrial melanism in England after 1850 is an excellent example of Natural selection. Explain how?
Pick the odd man out:
