The membrane that surrounds and protects the lungs is called: MCQ with Answer and Explanation

The membrane that surrounds and protects the lungs is called:
A. Meninges
B. Pericardium
C. Pleura
D. Peritoneum
Answer: Option C
Solution (By JKSSB Mock Tests)
The pleura is a double-layered serous membrane surrounding each lung; the visceral pleura adheres to the lung surface, and the parietal pleura lines the chest wall. The space between them contains pleural fluid, reducing friction during breathing. Pericardium surrounds the heart, peritoneum lines the abdominal cavity, meninges cover the brain and spinal cord.

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Practice More Biology Questions

Question #1
The term 'biological magnification' refers to:
A. The increase in biodiversity in a climax community
B. The increasing concentration of non-biodegradable toxic substances in organisms at higher trophic levels
C. The rapid growth of algae in nutrient-rich water bodies
D. The increase in the number of organisms at higher trophic levels

Correct Answer: Option B


Explanation:
Biological magnification (or biomagnification) is the process where the concentration of persistent, non-biodegradable toxic substances (like DDT, mercury, or PCBs) increases progressively at each successive trophic level in a food chain. Because these substances are not metabolized or excreted, they accumulate in the tissues of organisms. Top predators end up with the highest, often lethal, concentrations of these toxins.

This question belongs to: Science Biology
Question #2
Assertion (A): Mycorrhizae are symbiotic associations between fungi and plant roots.
Reason (R): The fungus provides water and minerals to the plant and receives sugars in return.
A. Both A and R are true, and R is the correct explanation.
B. A false, R true.
C. Both A and R are true, but R is not the correct explanation.
D. A true, R false.

Correct Answer: Option A


Explanation:
Mycorrhizae enhance nutrient and water uptake for plants, and the fungus benefits from photosynthetic carbohydrates. It’s a mutualistic symbiosis. R correctly explains A.

This question belongs to: Science Biology
Question #3
The disease caused by the protozoan Trypanosoma cruzi is:
A. Chagas disease
B. Malaria
C. Leishmaniasis
D. Sleeping sickness

Correct Answer: Option A


Explanation:
Chagas disease is caused by T. cruzi, transmitted by triatomine bugs. Sleeping sickness is T. brucei, malaria Plasmodium, leishmaniasis Leishmania.

This question belongs to: Science Biology