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Question
Write the answers to the questions by observing the figure below.
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| (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.
Solution
- ‘(a)’ - Duck billed platypus
- ‘(b)’ - Lungfish
- ‘(c)’ - Peripatus
- The evolutionary evidence illustrated in the given figure is connecting links.
- Definition: Connecting links are some plants or animals that show morphological characters by which they can be related to two different groups of organisms.
RELATED QUESTIONS
State the connecting links between Peripatus with Annelida and Arthopoda.
Give two examples of vestigial organs in human beings and plants.
Differentiate between homology and analogy. Give one example of each.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Homologous organs
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
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
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The organs which perform similar functions but have different basic structure are called :
(a) asymmetric organs
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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
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Write short notes based upon the information known to you.
Connecting link
Explain with suitable examples importance of anatomical evidence in evolution.
Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................
Appendix : vestigial organ : : Peripatus : ____________
Give scientific reason.
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Select the CORRECT match.
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Where is carbon dating used?
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
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Tendons and ligaments are examples of ______.
Flippers of Penguins and Dolphins are examples of:
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Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
How do we compute the age of a fossil?
Complete the following diagram:
Complete the following chart:
I am the connecting link of annelida and arthropoda. What is my name?
What is the function of the appendix of our digestive system?
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Define the term:
Homologous organs
Complete the following conceptual picture:
Give examples of homologous organs and analogous organs in plants.
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