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) Ww × Ww
(b) Ww × ww
(c) Ww × WW
(d) WW × WW
The correct answers to the above question in:
Answer: (b)
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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 class of algae mostly found in salt water?
a) Chlorophyceae
b) Phaeophyceae
c) Rhodophyceae
d) Both (a) and (b)
Answer »Answer: (b)
Question : 2
Match List-I with List-II :
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
Answer »Answer: (c)
Question : 3
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 : 4
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)
Question : 5
All producers are
a) All autotrophs
b) Food making organisms
c) Make food in the presence of sunlight with chlorophyll
d) All the above
Answer »Question : 6
Which is not a stem modification ?
a) Pitcher of Nepenthes
b) Rhizome of ginger
c) Corm of Colocasia
d) Tuber of potato
Answer »Answer: (a)
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