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Biology MCQ Practice 16 — Science Foundation Course for Class 11 & 12
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1.
The process of water movement through a semi-permeable membrane is called:
(a) Diffusion
(b) Osmosis
(c) Active transport
(d) Imbibition
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Correct Answer: (b) Osmosis
Explanation:
Osmosis is the movement of water from high water potential to low
2.
The organelle that is the site of protein synthesis is:
(a) Mitochondria
(b) Ribosome
(c) Golgi apparatus
(d) Lysosome
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Correct Answer: (b) Ribosome
Explanation:
Ribosomes are the sites of protein synthesis
3.
The hormone that lowers blood sugar level is:
(a) Glucagon
(b) Insulin
(c) Adrenaline
(d) Thyroxine
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Correct Answer: (b) Insulin
Explanation:
Insulin decreases blood glucose level
4.
The tissue that conducts water in plants is:
(a) Phloem
(b) Xylem
(c) Parenchyma
(d) Collenchyma
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Correct Answer: (b) Xylem
Explanation:
Xylem transports water and minerals
5.
The process of cell division in gamete formation is:
(a) Mitosis
(b) Meiosis
(c) Binary fission
(d) Budding
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Correct Answer: (b) Meiosis
Explanation:
Meiosis produces haploid gametes
6.
The respiratory pigment in human blood is:
(a) Myoglobin
(b) Haemoglobin
(c) Chlorophyll
(d) Haemocyanin
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Correct Answer: (b) Haemoglobin
Explanation:
Haemoglobin transports oxygen
7.
The basic unit of heredity is:
(a) Chromosome
(b) Gene
(c) DNA
(d) Nucleus
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Correct Answer: (b) Gene
Explanation:
Gene is the unit of heredity
8.
The largest gland in the human body is:
(a) Pancreas
(b) Liver
(c) Thyroid
(d) Pituitary
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Correct Answer: (b) Liver
Explanation:
Liver performs many metabolic functions
9.
The pigment responsible for photosynthesis is:
(a) Haemoglobin
(b) Chlorophyll
(c) Melanin
(d) Carotene
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Correct Answer: (b) Chlorophyll
Explanation:
Chlorophyll absorbs light energy
10.
The functional unit of the kidney is:
(a) Neuron
(b) Nephron
(c) Alveolus
(d) Sarcomere
Show Answer & Explanation
Correct Answer: (b) Nephron
Explanation:
Nephron filters blood and forms urine