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प्रश्न
Observe the given images and answer the following questions.
- Which evolutionary evidence does it indicate?
- What does it prove?
- State another example of evolutionary evidence.
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उत्तर
- The given picture indicates the morphological evidence of evolution.
- Morphological evidence is based on the similarity of size, shape or structure of organs among a group of organisms proving that they evolved from the same ancestor.
- Other examples of evolutionary evidence: Anatomical evidence, paleontological evidence, vestigial organs, embryological evidence, connecting links.
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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.
Which of the following pairs of two vegetables represent the correct homologous structures?
(A) Sweet potato and potato
(B) Sweet potato and tomato
(C) Carrot and potato
(D) Radish and carrot
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 ?
Which one of the following pairs of vegetables is an example of homologous structures?
(A) Potato and sweet potato
(B) Carrot and radish
(C) Carrot and tomato
(D) Tomato and radish
Attempt giving a clear definition of the term species.
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
Human tailbone is a vestigial organ. Explain.
Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that ______
The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
(a) homologous organs
(b) excretory organs
(c) analogous organs
(d) reproductive 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.
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
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
Explain any three molecular (genetic) evidences in favour of organic evolution.
Similarities in the initial stages indicate the _______ evidence.
______ is a vestigial organ in human beings.
Appendix : vestigial organ : : Peripatus : ____________
Give scientific reason.
Vertebrates have slowly originated from invertebrates.
Write a short note:
Embryological evidences
Write the answers to the questions by observing the figure below.
 |
 |
 |
| (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.
How do you differentiate homologous organs from analogous organs?
Select the correct statement.
Select the CORRECT match.
Which of these is not a vestigial organ in human beings?
Palaeontological evidence for evolution refers to the ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
The study of fossil evidence of evolution is called ______
Animal husbandry and plant breeding programmes are the examples of ______.
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.
How do we compute the age of a fossil?
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
Explain divergent evolution in detail. What is the driving force behind it?
Explain natural selection with the example of industrial melanism.
Write names of some vestigial organs in the human body.
