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Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Choose an option to check your answer.
A.
remove nitrogenous waste and help osmoregulation
B.
secrete saliva for chewing
C.
produce wing scales
D.
detect sound vibrations
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Correct Answer: A. remove nitrogenous waste and help osmoregulation
Explanation:
Malpighian tubules collect nitrogenous wastes from hemolymph and empty them into the gut. They also help maintain water and ion balance.
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A.
water and ion recovery before waste elimination
B.
production of compound eyes
C.
storage of visual pigments only
D.
formation of wing veins
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Correct Answer: A. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
production of compound eyes
B.
storage of visual pigments only
C.
formation of wing veins
D.
water and ion recovery before waste elimination
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Correct Answer: D. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
formation of wing veins
B.
storage of visual pigments only
C.
production of compound eyes
D.
water and ion recovery before waste elimination
Show Answer
Correct Answer: D. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
Choose an option to check your answer.
A.
production of compound eyes
B.
storage of visual pigments only
C.
water and ion recovery before waste elimination
D.
formation of wing veins
Show Answer
Correct Answer: C. water and ion recovery before waste elimination
Explanation:
The hindgut helps conserve water and regulate salts. This is important for insects living in dry environments.
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A.
region where old cuticle is shed
B.
tube that pumps hemolymph only
C.
major site of digestion and nutrient absorption
D.
site where wings attach
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Correct Answer: C. major site of digestion and nutrient absorption
Explanation:
The midgut is the main digestive and absorptive region. Enzymes act on food here, and nutrients pass into the hemolymph.
Choose an option to check your answer.
A.
tube that pumps hemolymph only
B.
region where old cuticle is shed
C.
major site of digestion and nutrient absorption
D.
site where wings attach
Show Answer
Correct Answer: C. major site of digestion and nutrient absorption
Explanation:
The midgut is the main digestive and absorptive region. Enzymes act on food here, and nutrients pass into the hemolymph.
Choose an option to check your answer.
A.
region where old cuticle is shed
B.
site where wings attach
C.
tube that pumps hemolymph only
D.
major site of digestion and nutrient absorption
Show Answer
Correct Answer: D. major site of digestion and nutrient absorption
Explanation:
The midgut is the main digestive and absorptive region. Enzymes act on food here, and nutrients pass into the hemolymph.
Choose an option to check your answer.
A.
region where old cuticle is shed
B.
tube that pumps hemolymph only
C.
site where wings attach
D.
major site of digestion and nutrient absorption
Show Answer
Correct Answer: D. major site of digestion and nutrient absorption
Explanation:
The midgut is the main digestive and absorptive region. Enzymes act on food here, and nutrients pass into the hemolymph.
Choose an option to check your answer.
A.
site of egg fertilization only
B.
main site of oxygen diffusion in wings
C.
ingestion, storage, and mechanical processing of food
D.
main site of hormone secretion
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Correct Answer: C. ingestion, storage, and mechanical processing of food
Explanation:
The insect foregut receives food and may include structures such as crop and gizzard. It is lined with cuticle and helps store or mechanically process food.
Choose an option to check your answer.
A.
main site of oxygen diffusion in wings
B.
site of egg fertilization only
C.
main site of hormone secretion
D.
ingestion, storage, and mechanical processing of food
Show Answer
Correct Answer: D. ingestion, storage, and mechanical processing of food
Explanation:
The insect foregut receives food and may include structures such as crop and gizzard. It is lined with cuticle and helps store or mechanically process food.
Choose an option to check your answer.
A.
site of egg fertilization only
B.
ingestion, storage, and mechanical processing of food
C.
main site of oxygen diffusion in wings
D.
main site of hormone secretion
Show Answer
Correct Answer: B. ingestion, storage, and mechanical processing of food
Explanation:
The insect foregut receives food and may include structures such as crop and gizzard. It is lined with cuticle and helps store or mechanically process food.
