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प्रश्न
Complete the following diagram:
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उत्तर
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संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
Differentiate between homology and analogy. Give one example of each.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Homologous organs
Study the following statements:-
I. Wings of birds and wings of bats are homologous organs.
II. Wings of birds and wings of insects are modified forelimbs.
III. Wings of birds and wings of insects are analogous organs.
IV. Wings of birds and forelimbs of horse are homologous organs.
The correct statements are
(A) I and II
(B) II and III
(C) III and IV
(D) I and IV
With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.
If you are asked to select a group of two vegetables, out of the following, having homologous structures which one would you select?
(a) Carrot and radish
(b) Potato and sweet potato
(c) Potato and tomato
(d) Lady finger and potato
Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.
(i) Forelimbs of cheetah and mammals
(ii) Flippers of dolphins and penguins
(iii) Wings of butterflies and birds
(iv) Forelimbs of whales and mammals
How analogy and homology considered as an evidence in support of evolution ?
Name the scientists who Discovered the fossil of Australopithecus
What are homologous organs?
How do homologous organs help in providing evidence for organic evolution?
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
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such organs.
Identify the following pairs as homologous and analogous organs:
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale
Write the names of those animals in whom some vestigial organs in human body are functioning.
Explain with suitable examples importance of anatomical evidence in evolution.
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
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Explain any three molecular (genetic) evidences in favour of organic evolution.
Explain the importance of Anatomical evidences with examples.
Write a short note:
Embryological evidences
Write the answers to the questions by observing the figure below.
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 |
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| (a) | (b) | (c) |
- Write the name of the animal ‘(a)’ in the figure.
- Write the name of the animal ‘(b)’ in the figure.
- Write the name of the animal ‘(c)’ in the figure.
- Which evolutionary evidence is illustrated by this figure?
- Write the definition of that evidence for evolution.
Select vestigial organs from the following.
Select the correct statement.
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
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 ______.
Appearance of antibiotic-resistant bacteria is an example of ______.
Complete the following chart:
I am the connecting link of annelida and arthropoda. What is my name?
What is the function of the appendix of our digestive system?
Find odd one out:
Find the odd one out:
