Advertisements
Advertisements
प्रश्न
Define fossil.
Advertisements
उत्तर
Large number of organisms get buried due to disasters like floods, earthquakes, volcanoes, etc. Remnants and impressions of such organisms remain preserved underground. These are called fossils.
APPEARS IN
संबंधित प्रश्न
What are vestigial organs?
Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.
(i) Forelimbs of cheetah and mammals
(ii) Flippers of dolphins and penguins
(iii) Wings of butterflies and birds
(iv) Forelimbs of whales and mammals
How analogy and homology considered as an evidence in support of evolution ?
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
Attempt giving a clear definition of the term species.
Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :
Analogous organs
Explain any three molecular (genetic) evidences in favour of organic evolution.
Differentiate between connecting links and the missing links.
What are homologous structures?
Similarities in the initial stages indicate the _______ evidence.
Find an odd one out.
Find an odd one out.
Appendix : vestigial organ : : Peripatus : ____________
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Study of fossils is ______.
While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.
I am the connecting link of annelida and arthropoda. What is my name?
What is the function of the appendix of our digestive system?
Find the odd one out:
Define Palaeontology.
