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प्रश्न
Write the names of those animals in whom the human body organs are functioning.
उत्तर
It is useful in monkeys and other animals like rabbits, cows, horses, etc. for movement of the ear pinna.
संबंधित प्रश्न
What are vestigial organs?
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
Which of the following pairs of two vegetables represent the correct homologous structures?
(A) Sweet potato and potato
(B) Sweet potato and tomato
(C) Carrot and potato
(D) Radish and carrot
With the help of any two suitable examples explain the effect of anthropogenic actions on organic evolution.
Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?
“Two areas of study namely 'evolution' and 'classification' are interlinked'. Justify this statement.
Differentiate between analogy and homology giving one example each of plant and animal respectively.
Four students P, Q, R and S differently reported the following set of organs to be analogous :
P. Forelimb of a frog and forelimb of a lizard
Q. Forelimb of a bird and forelimb of a human
R. Wings of a parrot and wings of a butterfly
S. Wings of a bird and wings of a bat
The two students who have reported correctly are :
(A) P and Q
(B) Q and R
(C) R and S
(D) P and S
An example of homologous organs is
Enlist any four sequential evolutionary names of human ancestors.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Fossils
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
How do homologous organs help in providing evidence for organic evolution?
Human tailbone is a vestigial organ. Explain.
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
The presence of which of the following types of organs in two animals indicates that they are not derived from a common ancestor?
(a) homologous organs
(b) excretory organs
(c) analogous organs
(d) reproductive organs
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
There are five animals A, B, C, D and E. The animal A uses its modified forelimbs for flying. The animal B uses its forelimbs for running whereas the animal C uses its forelimbs for grasping. The animal D can live on land as well as in water and uses its forelimbs to prop up the front end of its body when at rest. The animal E which respires by using spiracles and tracheae uses wings for flying but its wings are analogous to the modified forelimbs of animal A.
(a) What could the animals A, B, C, D and E be?
(b) Why are the forelimbs of animals A, B, C, D called homologous organs?
(c) What does the existence of homologous organs in animals A, B, C and D tell us about their ancestors ?
(d) Why are the modified forelimbs of animal A and the wings of animal E called analogous organs?
(e) State whether animals A and E have a common ancestor or not.
Explain with suitable examples importance of anatomical evidence in evolution.
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
Similarities in the initial stages indicate the _______ evidence.
Appendix : vestigial organ : : Peripatus : ____________
The decaying process of C-14 occurs continuously in dead organisms only.
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Give scientific reason.
Vertebrates have slowly originated from invertebrates.
Define the evidence of evolution shown in the figure.
Explain any five types of evidence that support the theory of evolution.
Select vestigial organs from the following.
Fossils are generally found in ______.
Did aquatic life forms get fossilised? If, yes where do we come across such fossils?
How do we compute the age of a living tree?
Complete the following diagram:
Write down the difference between homologous and analogous organs.
Write a note on the significance of Palaeontology.
