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प्रश्न
Explain the importance of Anatomical evidences with examples.
उत्तर
- Anatomical evidences are the similarities in structures and anatomy between different organisms.
- The hand of a human, foreleg of ox, flipper of whale, and forelimbs of bat appear different superficially or morphologically.
- Also, the function of these structures is different in different animals.
- However, there is a similarity in the structure of bones and bony joints in the organs of these animals.
- These similarities indicate that the animals evolved from a common ancestor thus providing proof of evolution.
APPEARS IN
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.
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
Which of the following is a correct set of homologous organs?
(a) Forelimbs of frog, bird and lizard
(b) Spine of cactus and thorn of bougainvillea
(c) Wings of bat and wings of butterfly
(d) Wings of a bird and wings of a bat
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.
Give the importance of fossil in support of organic evolution
Name the scientists who Discovered the fossil of Australopithecus
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
How do homologous organs help in providing evidence for organic evolution?
Differentiate between analogous and homologous structures.
Name two animals having homologous organs and two having analogous organs. Name these organs.
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
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.
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
Write short notes based upon the information known to you.
Connecting link
With the help of diagrams, describe emasculation and bagging.
Differentiate between connecting links and the missing links.
Similarities in the initial stages indicate the _______ evidence.
Name the parts shown in the diagram.
Human jaw
Appendix : vestigial organ : : Peripatus : ____________
The decaying process of C-14 occurs continuously in dead organisms only.
Give scientific reason.
Vertebrates have slowly originated from invertebrates.
Enlist the evidences of evolution.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Explain any five types of evidence that support the theory of evolution.
Select the CORRECT match.
Where is carbon dating used?
Cucurbits do not develop thick and woody stem as they are:
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 ______
What were the characteristics of life forms that had been fossilised?
How do we compute the age of a rock?
Explain divergent evolution in detail. What is the driving force behind it?
Find the odd one out:
Pick the odd man out:
