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) All autotrophs
(b) Food making organisms
(c) Make food in the presence of sunlight with chlorophyll
(d) All the above
The correct answers to the above question in:
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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 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 : 2
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 : 3
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 : 4
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)
Question : 5
Consider the following statements :
- Sickle cell anaemia is a genetic disease common in tropical and sub-tropical countries.
- Sickle-cell anaemia is due to mutation in β-globulin gene.
- Due to the sickle-shaped RBCS oxygen carrying capacity of the haemoglobin decreases.
a) 2 and 3
b) 1, 2 and 3
c) 1 only
d) 3 only
Answer »Answer: (b)
Due to mutation in the b-globulin gene of haemoglobin, the oxygen carrying capacity of RBCs decreases considerably, eventually causing sickle cell andaemia.
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