set 1 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) Ammonifying bacteria
(b) Methanogens
(c) Nitrifying bacteria
(d) Denitrifying bacteria
The correct answers to the above question in:
Answer: (b)
Methanobacillus (methanogen) occurs in marshes and also in dung. It produces CH4 gas under anaerobic condition and is utilized in gobar gas plant.
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
According to recent proof, the life on earth emerged approximately
a) Before 20,00,000 years
b) Before 20,000 years
c) Before 2,00,000 years
d) Before 2,000,000,000 years
Answer »Answer: (d)
Question : 2
To which of the following types of animals are Salamanders closely related?
a) Prawns and Crabs
b) Dolphins and Whales
c) Frogs and Toads
d) Seals and Walruses
Answer »Answer: (c)
Question : 3
Vestigial organs are those present in the living beings without functions gives and mark the correct option for vestigeal organs in humans
a) nicitating membrane in eyes
b) Vermifrom appendix
c) mammary glands of male
d) all of the above
Answer »Answer: (d)
These 'useless' body parts, otherwise known as vestigial organs, are remnants of lost functions that our ancestors possessed. They once represented a function that evolved out of a necessity for survival, but over time that function became non-existent.
Question : 4
Which of the following is not a pteridophyte?
a) Polypodium
b) Ginkgo
c) Selaginella
d) Azolla
Answer »Answer: (b)
Ginkgo is a gymnosperm.
Question : 5
Down’s syndrome is due to
a) chromosome number increase in 18th pair autosome
b) chromosome number decrease in 21st pair autosome
c) chromosome number increase in 21st pair autosome
d) chromosome number decrease in 18th pair autosome
Answer »Answer: (c)
Down syndrome is a case of Trisomy 21, a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.
Question : 6
The book ‘Origin of Species’ is written by
a) Darwin
b) Watson
c) Aristotle
d) Lamarck
Answer »Answer: (a)
'Origin of Species' book was written by Charles Robert Darwin.
During his world journey (1831–1936) as a naturalist on the H.M.S. Beagle ship, he visited many parts of the world. On the basis of the observations of this journey, he wrote the book thereby describing his theory of natural selection.
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