set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 5 EXERCISES
The following question based on genetics, evolution of life & ecological biodiversity topic of general science mcq
(a) Competition
(b) Variation
(c) Extinction
(d) Reproduction
The correct answers to the above question in:
Answer: (b)
Organic evolution is the process of cumulative change of living populations and the descendant populations of organisms. According to Darwin, variations are differences among individuals.
Variations which help the individual to fit in its surroundings are passed on to the next generation while others disappear. Thus, variation plays an important role in evolution.
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
A dihybrid condition is
a) Tt rr
b) tt rr
c) tt Rr
d) Tt Rr
Answer »Answer: (d)
Dihybrid condition involves simultaneous inheritance of two pairs of mendelian factors or genes.
Question : 2
The primitive atmosphere of earth contained water vapours, hydrogen, ammonia and
a) O2
b) N2
c) CO2
d) CH4
Answer »Answer: (d)
The primitive atmosphere of the earth contained : H2 O, H2 , NH3 & CH4 . The ratio was (2 : 2 : 1) of : NH3 , CH4 and hydrogen.
Question : 3
Darwin’s theory of natural selection is based on
a) Survival of the fittest
b) Over production
c) Struggle for existence and variation
d) All of the above
Answer »Answer: (d)
Question : 4
Group of organisms that closely resemble each other and freely interbreed in nature, constitute a
a) family
b) species
c) genus
d) taxon
Answer »Answer: (b)
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