Which of the following statements about the brain is correct? MCQ with Answer and Explanation

Which of the following statements about the brain is correct?
A. The cerebellum controls speech and memory.
B. The cerebrum controls body temperature and hunger.
C. The medulla oblongata regulates heart rate.
D. The hypothalamus is responsible for intelligence.
Answer: Option C
Solution (By JKSSB Mock Tests)
The medulla oblongata contains centers for heart rate, breathing, and blood pressure. Hypothalamus controls temperature and hunger, cerebrum intelligence and memory, cerebellum coordination.

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Practice More Biology Questions

Question #1
Assertion (A): The cell wall of fungi is made of cellulose.
Reason (R): Chitin is a characteristic component of fungal cell walls.
A. Both A and R are true, and R is the correct explanation.
B. Both A and R are true, but R is not the correct explanation.
C. A is true, but R is false.
D. A is false, but R is true.

Correct Answer: Option D


Explanation:
Fungal cell walls contain chitin, not cellulose. Cellulose is found in plant cell walls. Thus, A is false and R is true.

This question belongs to: Science Biology
Question #2
Who introduced the binomial nomenclature system?
A. Robert Hooke
B. Charles Darwin
C. Gregor Mendel
D. Carolus Linnaeus

Correct Answer: Option D


Explanation:
Carolus Linnaeus, a Swedish botanist, introduced the binomial nomenclature system in his book 'Species Plantarum' (1753). This system assigns a two-part scientific name—genus and species—to every organism. For example, Homo sapiens. Darwin proposed natural selection, Hooke discovered cells, and Mendel laid the foundation of genetics. Linnaeus is also known as the father of taxonomy. Binomial names are universally accepted and italicized in print.

This question belongs to: Science Biology
Question #3
The 'Hormone Erythropoietin' (EPO), which stimulates the production of red blood cells in the bone marrow, is primarily secreted by the:
A. Liver
B. Bone marrow itself
C. Spleen
D. Kidneys

Correct Answer: Option D


Explanation:
Erythropoietin (EPO) is a glycoprotein hormone that is the primary regulator of red blood cell production (erythropoiesis). It is primarily produced and secreted by the interstitial fibroblasts in the kidneys (specifically in the peritubular capillary bed) in response to cellular hypoxia (low oxygen levels). A small amount is also produced by the liver. EPO travels to the bone marrow, where it stimulates the proliferation and differentiation of erythroid progenitor cells into mature red blood cells.

This question belongs to: Science Biology