set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 6 EXERCISES
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The following question based on physiology of plants, humans and animals topic of general science mcq
(a) fusion of two polar bodies
(b) a male gamete fused with egg and second male gamete fused with secondary nucleus
(c) fusion of male gametes and ovum
(d) all the above
The correct answers to the above question in:
Answer: (b)
Double fertilization means, a male gamete fused with egg and second male gamete fused with secondary nucleus.
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Read more biology Based General Science Questions and Answers
Question : 1
Which one among the following statements is correct?
a) All veins carry oxygenated blood
b) All arteries carry oxygenated blood
c) Except the pulmonary artery, all other arteries carry oxygenated blood
d) Except the pulmonary vein, all other veins carry oxygenated blood
Answer »Answer: (c)
Question : 2
The hormone responsible for phototropism is
a) Abscisic acid
b) Auxin
c) Ethylene
d) Gibberellic acid
Answer »Answer: (b)
Question : 3
Which part of human body maintain the body temperature?
a) Lungs
b) Liver
c) Heart
d) Kidney
Answer »Answer: (a)
Question : 4
Melatonin is produced by
a) skin
b) thymus
c) pituitary
d) pineal gland
Answer »Answer: (d)
Melatonin is secreted by the pineal gland present between the cerebral hemispheres.
Melatonin concentration in blood follows a diurnal cycle, it rises in the evening and drops at noon. Melatonin lightens skin colour in certain animals and regulates the working of gonads.
Question : 5
Fungi
a) include both autotrophs and heterotrophs.
b) always reproduce asexually using spores.
c) cause tuberculosis and lyme disease in humans.
d) include both inicellular and multicellular forms.
Answer »Answer: (d)
Fungi include both unicellular and multicellular forms, with both asexually and sexually reproducing organisms. No fungal specie is autotroph.
TB is caused by Mycobacterium tuberculosis and Lyme disease is caused by bacterial species of Borrelia.
Question : 6
Match List-I with List-II and select the correct answer using the code given below the lists.
List-I | List-II |
A. Ecotoxicology | 1. Study of ductless gland |
B. Hematology | 2. Study about mollusks |
C. Malacology | 3. Study of blood |
D. Endocrinology | 4. Study of the effects of toxic chemical substance on animal and plant |
a) 2 1 4 3
b) 4 3 2 1
c) 3 2 1 4
d) 1 4 3 2
Answer »Answer: (b)
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