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प्रश्न
Explain the importance of Anatomical evidences with examples.
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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.
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संबंधित प्रश्न
(a) Select the analogous structures from the combination given below:
(i) Forelimbs of whales and bats
(ii) Eyes of octopus and mammals
(iii) Tuber of sweet potato and potato
(iv) Tuber of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent
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
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
What are homologous organs?
Differentiate between analogous and homologous structures.
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 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
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
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
The most common types of fossils are ------------------------.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Define fossil.
Define phylogeny.
Find an odd one out.
Find an odd one out.
Name the parts shown in the diagram.
Human jaw
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
Enlist the evidences of evolution.
Define the evidence of evolution shown in the figure.
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?
The degenerated and non-functional organs found in an organism are called ______.
How do you differentiate homologous organs from analogous organs?
Select the CORRECT set of homologous organs.
Why do all the gametes formed in human females have an X chromosome?
Tendons and ligaments are examples of ______.
Which is not a vestigial organ in a man?
Animal husbandry and plant breeding programmes are the examples of ______.
Give an example for convergent evolution and identify the features towards which they are converging.
The evolutionary story of moths in England during industrialisation reveals, that 'evolution is apparently reversible'. Clarify this statement.
Explain divergent evolution in detail. What is the driving force behind it?
You have studied the story of Peppermoths in England. Had the industries been removed, what impact could it have had on the moth population? Discuss.
Complete the following chart:
Find odd one out:
As shown in figure below some organisms that share a common ancestor have features that have different functions, but similar structures.
These are known as ______. Give example.
Evolutionary convergence is the development of a ______.
Write a note on the significance of Palaeontology.
