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प्रश्न
Find odd one out:
विकल्प
Tail bone
wisdom teeth
ear pinna
appendix
heart
उत्तर
heart
Explanation:
Rest other organs are degenerated or underdeveloped, useless organs of organisms which are known as vestigial organs.
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संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Differentiate between homology and analogy. Give one example of each.
(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.
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
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
Give the importance of fossil in support of organic evolution
Human tailbone is a vestigial organ. Explain.
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
The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such 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
The most common types of fossils are ------------------------.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Define phylogeny.
I am a connecting link between reptiles and mammals. Who am I?
The decaying process of C-14 occurs continuously in dead organisms only.
Enlist the evidences of evolution.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Explain any five types of evidence that support the theory of evolution.
Biogenetic law states that ______.
How do you differentiate homologous organs from analogous organs?
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Which of these is not a vestigial organ in human beings?
Basic principles of embryonic development were pronounced by:
Flippers of Penguins and Dolphins are examples of:
Organs having similar functions but different origin and development are known as:
Analogous organs arise due to ______.
Appearance of antibiotic-resistant bacteria is an example of ______.
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
Give an example for convergent evolution and identify the features towards which they are converging.
Explain divergent evolution in detail. What is the driving force behind it?
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
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.
Write down the difference between homologous and analogous organs.
Write a note on the significance of Palaeontology.
Industrial melanism in England after 1850 is an excellent example of Natural selection. Explain how?
Give examples of homologous organs and analogous organs in plants.
