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प्रश्न
The decaying process of C-14 occurs continuously in dead organisms only.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Give two examples of vestigial organs in human beings and plants.
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
Four students A, B, C and D reported the following set of organs to be homologous. Who is correct ?
(A) Wings of a bat and a butterfly
(B) Wings of a pigeon and a bat
(C) Wings of a pigeon and a butterfly
(D) Forelimbs of cow, a duck and a lizard
Enlist any four sequential evolutionary names of human ancestors.
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
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
What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?
Read the following statement and justify the same in your own words with the help of a suitable example.
There is evidence of foetal science among chordates.
What are homologous structures?
______ is a vestigial organ in human beings.
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 ______.
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Tendons and ligaments are examples of ______.
Explain divergent evolution in detail. What is the driving force behind it?
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.
Give one example of homologous organs found in plants.
