The structure that produces cerebrospinal fluid in the brain is the: MCQ with Answer and Explanation

The structure that produces cerebrospinal fluid in the brain is the:
A. Choroid plexus
B. Meninges
C. Corpus callosum
D. Pineal gland
Answer: Option A
Solution (By JKSSB Mock Tests)
The choroid plexus, located in the ventricles of the brain, is a network of capillaries and ependymal cells that secretes cerebrospinal fluid (CSF). CSF cushions the brain, removes waste, and maintains chemical environment. Meninges are protective coverings, corpus callosum connects hemispheres, pineal secretes melatonin.

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Practice More Biology Questions

Question #1
The scientist who proposed the 'germ theory of disease' was:
A. Alexander Fleming
B. Louis Pasteur
C. Joseph Lister
D. Robert Koch

Correct Answer: Option B


Explanation:
Louis Pasteur provided strong evidence that microorganisms cause disease and developed pasteurization to kill pathogens. Koch formalized criteria linking specific microbes to specific diseases. Fleming discovered penicillin, Lister introduced antiseptic surgery.

This question belongs to: Science Biology
Question #2
The condition caused by excessive secretion of growth hormone in adults is:
A. Dwarfism
B. Acromegaly
C. Cretinism
D. Gigantism

Correct Answer: Option B


Explanation:
Acromegaly results from overproduction of growth hormone after the epiphyseal plates have fused, causing enlargement of hands, feet, jaw, and facial features. Gigantism occurs when excess GH is produced during childhood, leading to tall stature. Dwarfism is GH deficiency, cretinism is congenital hypothyroidism.

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Question #3
Assertion (A): All organisms are composed of cells. Reason (R): The cell is the basic unit of life.
A. Both A and R are true, but R is not the correct explanation of A.
B. A is true, but R is false.
C. A is false, but R is true.
D. Both A and R are true, and R is the correct explanation of A.

Correct Answer: Option D


Explanation:
The cell theory states that all organisms are composed of one or more cells, and the cell is the fundamental structural and functional unit of life. The reason directly supports the assertion. Thus, both are true and the reason correctly explains the assertion.

This question belongs to: Science Biology