The respiratory centre in the human brain is located in the: MCQ with Answer and Explanation

The respiratory centre in the human brain is located in the:
A. Cerebellum
B. Hypothalamus
C. Medulla oblongata
D. Cerebrum
Answer: Option C
Solution (By JKSSB Mock Tests)
The medulla oblongata contains the respiratory rhythmicity centre that controls the rate and depth of breathing. The pons also has pneumotaxic and apneustic centres influencing breathing. The cerebrum can exert voluntary control, cerebellum coordinates movement, and hypothalamus regulates homeostasis.

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Question #1
The technique of growing plants in nutrient-rich water without soil is known as:
A. Tissue culture
B. Geoponics
C. Hydroponics
D. Aeroponics

Correct Answer: Option C


Explanation:
Hydroponics is a method of growing plants in a water-based, nutrient-rich solution without soil. Aeroponics uses mist, geoponics is soil-based, tissue culture is in vitro on agar media. Hydroponics enables controlled nutrient delivery.

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The myelin sheath around axons in the peripheral nervous system is formed by:
A. Schwann cells
B. Astrocytes
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Correct Answer: Option A


Explanation:
In the peripheral nervous system (PNS), Schwann cells wrap around axons to form the myelin sheath, which insulates axons and increases the speed of nerve impulse conduction (saltatory conduction). In the central nervous system (CNS), oligodendrocytes perform this function. Astrocytes support neurons, microglia act as immune cells. Nodes of Ranvier are gaps in the myelin sheath.

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The disease caused by the tapeworm Taenia solium is:
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Correct Answer: Option C


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