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Questions
Write the names of those animals in whom some vestigial organs in human body are functioning.
Write name of those animals in which these vestigial organs are functional.
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Solution
- It is useful in monkeys and other animals, such as rabbits, cows, and horses, for the movement of the ear pinna.
- Appendix is fully functional in ruminants for the digestion of cellulose.
RELATED QUESTIONS
Differentiate between homology and analogy. Give one example of each.
Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:
Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)
(A) Potato and sweet potato
(B) Radish and carrot
(C) Okra and sweet potato
(D) Potato and tomato
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
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
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
Enlist any four sequential evolutionary names of human ancestors.
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
You have potato, carrot, radish, sweet potato, tomato and ginger bought from the market in your jute bag. Identify two vegetables to represent the correct homologous structures.
(A) Potato and tomato
(B) Carrot and tomato
(C) Potato and sweet potato
(D) Carrot and radish
Vestigial organ ______ present in human body is proof of evolution.
Explain with suitable examples importance of anatomical evidence in evolution.
_______ is a connecting link between Annelida and Arthropoda.
“Appearance of melanised moths post-industrialisation in England is a classic example of evolution by natural selection.” Explain.
Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy.
Differentiate between connecting links and the missing links.
Explain the importance of Anatomical evidences with examples.
Find an odd one out.
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Complete the flowchart.
Enlist the evidences of evolution.
What is carbon dating?
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.
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.
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?
Which of these is not a vestigial organ in human beings?
Cucurbits do not develop thick and woody stem as they are:
Tendons and ligaments are examples of ______.
The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.
How do we compute the age of a living tree?
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.
Find odd one out:
Find the odd one out:
Evolutionary convergence is the development of a ______.
Industrial melanism was highlighted by ______.
Complete the following conceptual picture:
Define Palaeontology.
Write names of some vestigial organs in the human body.
