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) Jean Baptiste
(b) Charles Darwin
(c) Herbert Spencer
(d) Hugo de Vries
The correct answers to the above question in:
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.
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
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 : 2
The process of translation is
a) protein synthesis
b) DNA synthesis
c) ribosome synthesis
d) RNA synthesis
Answer »Answer: (a)
Protein synthesis occurs over ribosomes which are also referred to as protein factories.
Question : 3
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 : 4
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.
Question : 5
Which one of the following processes of weathering belongs to both mechanical and chemical weathering?
a) Hydration
b) Crystallization
c) Exfoliation
d) Carbonation
Answer »Answer: (b)
Crystallization processes of weathering belong to both mechanical and chemical weathering. Mechanical or physical weathering involves the breakdown of rocks and soils through direct contact with atmospheric conditions, such as heat, water, ice and pressure.
Chemical weathering - the process by which the internal structure of a mineral is altered by the addition or removal of elements.
Question : 6
During the post-fertilisation period the ovules develop into __________ and the ovary matures into a _________.
a) A – flower; B – seed
b) A – seeds; B – fruit
c) A – fruit; B – seeds
d) A – seeds; B – flower
Answer »Answer: (b)
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