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
| List-I (Indian wildlife species) | List-II (Scientific names) |
| A. Asiatic wild ass | 1. Boselaphus tragocamelus |
| B. Barasingha | 2. Rucervus duvauceli |
| C. Chinkara | 3. Equus hemionus |
| D. Nilgai | 4. Gazella bennettii |
(a) A – 2; B – 3; C – 4; D – 1
(b) A – 2; B – 3; C – 1; D – 4
(c) A – 3; B – 2; C – 4; D – 1
(d) A – 3; B – 2; C – 1; D – 4
The correct answers to the above question in:
Answer: (c)
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Read more genetics evolution of life and ecological biodiversity Based General Science Questions and Answers
Question : 1
Which of the following is the correct sequence of evolution in vertebrates?
a) Bony fish – amphibians – reptiles – birds
b) Birds – bony fish – amphibians – reptiles
c) Amphibians – reptiles – bony fish – birds
d) Reptiles – birds – bony fish – amphibians
e) Reptiles – birds – amphibians – bony fish
Answer »Answer: (a)
Mammals and birds both evolved from reptiles-like ancestors. All vertebrates before the evolution of birds and mammals were ectothermic.
Ectothermic means regulating the body temperature from the outside through behavioural changes like hiding under a rock in shade to keep cool on a hot, sunny day. Mammals and birds are endothermy mean they can regulate the body temperature from the inside through metabolic and other physical changes.
Hint: Charles Darwin concluded that existing living forms share similarities to varying degrees not only among themselves but also with life forms that existed millions of years ago. There has been a gradual evolution of life forms with variations in characteristics.
Question : 2
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)
Question : 3
Which one is linked to evolution?
a) Competition
b) Variation
c) Extinction
d) Reproduction
Answer »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.
Question : 4
Which of the following class of algae mostly found in salt water?
a) Chlorophyceae
b) Phaeophyceae
c) Rhodophyceae
d) Both (a) and (b)
Answer »Answer: (b)
Question : 5
Which one of the following represents a test cross ?
a) Ww × Ww
b) Ww × ww
c) Ww × WW
d) WW × WW
Answer »Answer: (b)
Question : 6
Which of the following groups of plants play an important role in plant succession on bare rocks/soil?
a) Pteridophytes
b) Algae
c) Bryophytes
d) Gymnosperms
Answer »Answer: (d)
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