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प्रश्न
Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution
उत्तर
A) Embryological evidence of evolution has been shown in the picture.
B) Similarities between all embryos in early stages indicates that all those animals may have common ancestor.
C) Vestigial organs, Connecting link, etc.
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संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
How analogy and homology considered as an evidence in support of evolution ?
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Enlist any four sequential evolutionary names of human ancestors.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Name two animals having homologous organs and two having analogous organs. Name these organs.
The organs which perform similar functions but have different basic structure are called :
(a) asymmetric organs
(b) analogous organs
(c) homologous organs
(d) homophonic organs
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
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?
Select a set of homologous organs from the following:
(A) Wings of a bat and wings of a butterfly
(B) Wings of a pigeon and wings of a bat
(C) Wings of a butterfly and wings of a pigeon
(D) Forelimbs of a duck, forelimbs of a cow and forelimbs of a lizard
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.
Embryology
Complete the following chart:
Differentiate between connecting links and the missing links.
Answer the following question:
What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor? Justify your answer.
Find an odd one out.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Enlist the evidences of evolution.
Which evidence of evolution is shown in the given picture? Explain the importance of this evidence.
How do you differentiate homologous organs from analogous organs?
The fossil remains of Archaeopteryx is a connecting link between ______
- Define vestigial organs.
- Write names of any two vestigial organs in the human body.
- Write name of those animals in which these vestigial organs are functional.
Why do all the gametes formed in human females have an X chromosome?
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Tendons and ligaments are examples of ______.
Basic principles of embryonic development were pronounced by:
Organs having similar functions but different origin and development are known as:
Analogous organs arise due to ______.
What were the characteristics of life forms that had been fossilised?
Give an example for convergent evolution and identify the features towards which they are converging.
How do we compute the age of a rock?
Explain divergent evolution in detail. What is the driving force behind it?
Complete the following chart:
I am the connecting link of annelida and arthropoda. What is my name?
Find the odd one out:
Define the term:
Homologous organs
