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प्रश्न
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.
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उत्तर
- ‘(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.
संबंधित प्रश्न
The presence of which of the following types of organs in two organisms indicates that they are derived from the same ancestor?
(a) analogous organs
(b) respiratory organs
(c) digestive 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
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
Complete the following chart:
Very short answer question:
What is vestigeal organ?
Appendix : vestigial organ : : Peripatus : ____________
The decaying process of C-14 occurs continuously in dead organisms only.
What is carbon dating?
Select the correct statement.
Which of these is not a vestigial organ in human beings?
The fossil remains of Archaeopteryx is a connecting link between ______
Organs having similar functions but different origin and development are known as:
Analogous organs arise due to ______.
Fossils are generally found in ______.
Give an example for convergent evolution and identify the features towards which they are converging.
How do we compute the age of a fossil?
Explain divergent evolution in detail. What is the driving force behind it?
Complete the following chart:
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.
