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प्रश्न
Explain with suitable examples importance of anatomical evidence in evolution.
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उत्तर
- Different animal groups share comparable structures and anatomy. Human hands, bull forelimbs, bat patagiums, and whale flippers all have comparable internal architecture. All of these specimens share comparable bones and joints.
- There are no similarities in the external morphology. Also, each organ’s function varies depending on the animal. They might not have any structural similarities.
- However, the similarities in the anatomy are evidence that they may have a common ancestor.
- In this way, the anatomical evidence throws light on the process of evolution.
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संबंधित प्रश्न
(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.
(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
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
An example of homologous organs is
Enlist any four sequential evolutionary names of human ancestors.
What are homologous organs?
How do homologous organs help in providing evidence for organic evolution?
Differentiate between analogous and homologous structures.
Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.
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
Write short notes based upon the information known to you.
Embryology
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
_______ is a connecting link between Annelida and Arthropoda.
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Define fossil.
Differentiate between connecting links and the missing links.
Short answer question.
Give the significance of fossils.
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.
Explain any five types of evidence that support the theory of evolution.
A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?
Select the correct statement.
The fossil remains of Archaeopteryx is a connecting link between ______
Define vestigial organs.
Homologous organs are:
Cucurbits do not develop thick and woody stem as they are:
Study of fossils is ______.
The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.
Appearance of antibiotic-resistant bacteria is an example of ______.
Complete the following diagram:
I am the connecting link of annelida and arthropoda. What is my name?
Write down the difference between homologous and analogous organs.
Find the odd one out:
Explain natural selection with the example of industrial melanism.
Define the term:
Homologous organs
