Biology MCQ Practice 8 — Science Foundation Course for Class 11 & 12

1. The mode of nutrition in mushrooms is:

(a) Autotrophic (b) Heterotrophic (c) Saprophytic (d) Parasitic

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Correct Answer: (c) Saprophytic

Explanation:
Mushrooms are saprophytic fungi that absorb nutrients from dead matter

2. The organelle that stores starch in plant cells is:

(a) Mitochondria (b) Chloroplast (c) Leucoplast (d) Vacuole

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Correct Answer: (c) Leucoplast

Explanation:
Leucoplasts store starch and other nutrients

3. The hormone that increases blood sugar level is:

(a) Insulin (b) Glucagon (c) Thyroxine (d) Oxytocin

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Correct Answer: (b) Glucagon

Explanation:
Glucagon raises blood glucose by glycogenolysis

4. The tissue that transports water in plants is:

(a) Phloem (b) Xylem (c) Parenchyma (d) Collenchyma

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Correct Answer: (b) Xylem

Explanation:
Xylem conducts water and minerals upward

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 reduces chromosome number by half

6. The respiratory pigment in earthworm is:

(a) Haemoglobin (b) Haemocyanin (c) Chlorocruorin (d) Myoglobin

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Correct Answer: (c) Chlorocruorin

Explanation:
Earthworms have chlorocruorin in blood

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 is the largest gland and performs many 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 traps light energy

10. The functional unit of the kidney is:

(a) Neuron (b) Nephron (c) Alveolus (d) Sarcomere

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Correct Answer: (b) Nephron

Explanation:
Nephron is the structural and functional unit of kidney