Identify the INCORRECT statement about the digestive system: MCQ with Answer and Explanation

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Identify the INCORRECT statement about the digestive system:

A. Trypsin is secreted by the pancreas.

B. Villi increase the surface area for absorption in the small intestine.

C. Pepsin is active in the acidic environment of the stomach.

D. Bile is produced in the gall bladder.

Answer: Option D

Solution (By JKSSB Mock Tests)

Bile is produced by the liver and stored in the gall bladder. The gall bladder does not produce bile. All other statements are correct.

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Question #1

The process by which a cell engulfs large particles such as bacteria is:

A. Exocytosis

B. Osmosis

C. Phagocytosis

D. Pinocytosis

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Correct Answer: Option C

Explanation:
Phagocytosis is receptor-mediated or non-specific engulfment of large particles, forming a phagosome that fuses with lysosomes. Key in immune defense.

This question belongs to: Science Biology

Question #2

The waxy substance that waterproofs the leaf surface is:

A. Lignin

B. Suberin

C. Cellulose

D. Cutin

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Correct Answer: Option D

Explanation:
Cutin, along with waxes, forms the cuticle on the epidermis of leaves and stems, reducing water loss and providing protection. Lignin strengthens cell walls, cellulose is the wall polysaccharide, suberin is in cork cells and root endodermis.

This question belongs to: Science Biology

Question #3

Consider statements about scientists: 1. Gregor Mendel is the father of genetics. 2. Edward Jenner developed the smallpox vaccine. 3. Charles Darwin proposed the cell theory. Which are correct?

A. 1, 2 and 3

B. 2 and 3 only

C. 1 and 3 only

D. 1 and 2 only

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Correct Answer: Option D

Explanation:
Gregor Mendel, through his pea plant experiments, established the fundamental laws of inheritance, earning him the title 'father of genetics'. Edward Jenner pioneered the concept of vaccination by developing the first successful smallpox vaccine using cowpox material. Charles Darwin proposed the theory of evolution by natural selection, not the cell theory (proposed by Schleiden and Schwann). Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology

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