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प्रश्न
Scientists believe that all life originated in :
(a) the sea
(b) the soil
(c) the ground
(d) the air
उत्तर
Scientists believe that all life originated in sea water.
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संबंधित प्रश्न
"We cannot pass on to our progeny the experiences and qualifications earned during our life time". Justify the statement giving reason and examples.
Give any two distinctive features of Dryopithecus.
What are genes? Where are the genes located?
Fill in the following blank with suitable word :
The human forelimb and bat's forelimb are an example of .......... organs whereas an insect's wing and a bat's wing are an example of ........... organs.
Which of the following gas was not present in early earth atmosphere?
(a) Ammonia
(b) Oxygen
(c) Hydrogen sulphide
(d) Methane
Write short notes based upon the information known to you.
Evolution
Transfer of a part of chromosome or set of genes to a non-homologous chromosome is called ________.
Name any three types of postmating isolating mechanisms.
The Sewall Wright effect is also referred to as ______
Had Darwin been aware of Mendel’s work, would he been able to explain the origin of variations. Discuss.
