set 4 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) new environmental ways for existence
(b) making of independent species
(c) macro evolution
(d) all of the above
The correct answers to the above question in:
Answer: (d)
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
A plant having seeds but lacking flowers and fruits belongs to
a) Ferns
b) Pteridophytes
c) Mosses
d) Gymnosperms
Answer »Answer: (d)
Gymnosperms are vascular land plants having naked ovules i.e., ovules are not enclosed in a ovary hence, flower is absent. Ovules after fertilization produces naked seeds. Pteridophytes (ferns) and mosses do not produce seeds.
Question : 2
A biogeographic region with significant reservoir of biodiversity that is under threat from humans is called as
a) biodiversity reservoir
b) bioendangered region
c) biodiversity hotspot
d) environmentally endangered region
Answer »Answer: (c)
Question : 3
Which one of these is not a food chain
a) Plants → Insects → Frog → Snake → Kite
b) Trees → Deer → Lion
c) Plants → Man → Anaconda
d) Small → plants → Crabs → Fish → Swan → bird
Answer »Answer: (c)
Question : 4
Which was absent in the atmosphere at the time of origin of life ?
a) H2
b) O2
c) NH3
d) CH4
Answer »Answer: (b)
Oxygen gas was not present due to reducing atmosphere, it only came to existence after the evolution of photosynthesis process.
Question : 5
The two strands of DNA are held together by
a) phosphodiester bonds
b) hydrogen bonds
c) peptide bonds
d) S – S bonds
Answer »Answer: (b)
Question : 6
Binomial Nomenclature was given by
a) Carolus Linneaus
b) Lamarck
c) Ernst Mayr
d) Cuvier
Answer »Answer: (a)
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