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) protein synthesis
(b) DNA synthesis
(c) ribosome synthesis
(d) RNA synthesis
The correct answers to the above question in:
Answer: (a)
Protein synthesis occurs over ribosomes which are also referred to as protein factories.
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
With reference to the evolution of living organisms, which one of the following sequences is correct?
a) Salamander - Python - Kangaroo
b) Octopus - Dolphin - Shark
c) Pangolin - Tortoise - Hawk
d) Frog - Crab – Prawn
Answer »Answer: (a)
Question : 2
Dinosaurs were
a) Paleozoic amphibians
b) Cenozoic reptiles
c) Mesozoic birds
d) Mesozoic reptiles
Answer »Answer: (d)
Question : 3
Consider the following statements :
- Earth is kept warm due to green house flux.
- The reproduction and other activities of living organisms are affected by the abiotic components of ecosystem.
- Ecology is the scientific study of the interaction of organisms with each other and the environment.
a) A, B and C
b) A and B
c) B and C
d) None of these
Answer »Answer: (a)
Question : 4
An alga very rich in protein is
a) Oscillatoria
b) Spirogyra
c) Ulothrix
d) Chlorella
Answer »Answer: (d)
Chlorella can be grown to provide human food rich in proteins, lipids, carbohydrates, vitamins and minerals.
Question : 5
The term ‘Survival of Fittest’ was used by
a) Jean Baptiste
b) Charles Darwin
c) Herbert Spencer
d) Hugo de Vries
Answer »Answer: (c)
Herbert Spencer
He is a sociologist, who coined the phrase “survival of fittest” to explain the tendency of human society to change by itself as the strongest and fittest survive while the weak abolish themselves.
Question : 6
Flow of energy in an ecosystem is always
a) Multi directional
b) Unidirectional
c) Bidirectional
d) No specific direction
Answer »Answer: (b)
Energy flow in an ecosystem is always unidirectional in nature because most of the energy is released at the trophic level in the form of heat and performing metabolic activities.
Hence 10% is transferred from one trophic level to another. This makes a unidirectional flow of energy.
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