MCQ Collection
Pakistan MCQs
Practice Pakistan questions with answers and explanations.
Choose an option to check your answer.
A.
antennae digest proteins
B.
large mandibles cut hard wood
C.
labellar surfaces absorb liquid food
D.
spiracles filter pollen grains
Show Answer
Correct Answer: C. labellar surfaces absorb liquid food
Explanation:
Houseflies use sponging mouthparts to take liquid or liquefied food. The labella help spread and absorb food from surfaces.
Choose an option to check your answer.
A.
shedding of the old cuticle to allow growth
B.
production of pheromones by antennae
C.
movement of hemolymph through spiracles
D.
development of adult wings inside eggs
Show Answer
Correct Answer: A. shedding of the old cuticle to allow growth
Explanation:
Because the exoskeleton cannot expand continuously, insects grow by molting. Ecdysis is the shedding stage in which the old cuticle is cast off.
Choose an option to check your answer.
A.
labium forms a coiled sucking tube
B.
spiracles grind plant tissue
C.
mandibles cut and crush solid food
D.
Malpighian tubules bite and chew
Show Answer
Correct Answer: C. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
the region that bears walking legs only
B.
a blood-filled tube that forms the heart
C.
a soft abdominal sac for gas exchange
D.
a sclerotized structure bearing eyes, antennae, and mouthparts
Show Answer
Correct Answer: D. a sclerotized structure bearing eyes, antennae, and mouthparts
Explanation:
The insect head is a hardened capsule made of fused segments. It supports feeding structures and major sensory organs such as compound eyes and antennae.
Choose an option to check your answer.
A.
shedding of the old cuticle to allow growth
B.
production of pheromones by antennae
C.
development of adult wings inside eggs
D.
movement of hemolymph through spiracles
Show Answer
Correct Answer: A. shedding of the old cuticle to allow growth
Explanation:
Because the exoskeleton cannot expand continuously, insects grow by molting. Ecdysis is the shedding stage in which the old cuticle is cast off.
Choose an option to check your answer.
A.
Malpighian tubules bite and chew
B.
labium forms a coiled sucking tube
C.
spiracles grind plant tissue
D.
mandibles cut and crush solid food
Show Answer
Correct Answer: D. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
the region that bears walking legs only
B.
a blood-filled tube that forms the heart
C.
a sclerotized structure bearing eyes, antennae, and mouthparts
D.
a soft abdominal sac for gas exchange
Show Answer
Correct Answer: C. a sclerotized structure bearing eyes, antennae, and mouthparts
Explanation:
The insect head is a hardened capsule made of fused segments. It supports feeding structures and major sensory organs such as compound eyes and antennae.
Choose an option to check your answer.
A.
shedding of the old cuticle to allow growth
B.
development of adult wings inside eggs
C.
movement of hemolymph through spiracles
D.
production of pheromones by antennae
Show Answer
Correct Answer: A. shedding of the old cuticle to allow growth
Explanation:
Because the exoskeleton cannot expand continuously, insects grow by molting. Ecdysis is the shedding stage in which the old cuticle is cast off.
Choose an option to check your answer.
A.
labium forms a coiled sucking tube
B.
mandibles cut and crush solid food
C.
Malpighian tubules bite and chew
D.
spiracles grind plant tissue
Show Answer
Correct Answer: B. mandibles cut and crush solid food
Explanation:
Chewing mouthparts rely on strong mandibles. Grasshoppers and cockroaches use this type to cut, crush, and process solid food.
Choose an option to check your answer.
A.
the region that bears walking legs only
B.
a sclerotized structure bearing eyes, antennae, and mouthparts
C.
a soft abdominal sac for gas exchange
D.
a blood-filled tube that forms the heart
Show Answer
Correct Answer: B. a sclerotized structure bearing eyes, antennae, and mouthparts
Explanation:
The insect head is a hardened capsule made of fused segments. It supports feeding structures and major sensory organs such as compound eyes and antennae.
Choose an option to check your answer.
A.
epicuticle, exocuticle, and endocuticle
B.
epidermis, dermis, and hypodermis
C.
periostracum, nacre, and mantle
D.
ectoderm, mesoderm, and endoderm
Show Answer
Correct Answer: A. epicuticle, exocuticle, and endocuticle
Explanation:
The insect cuticle includes an outer epicuticle and deeper procuticle regions such as exocuticle and endocuticle. This layered design provides protection, support, and resistance to water loss.
Choose an option to check your answer.
A.
movement of hemolymph through spiracles
B.
shedding of the old cuticle to allow growth
C.
production of pheromones by antennae
D.
development of adult wings inside eggs
Show Answer
Correct Answer: B. shedding of the old cuticle to allow growth
Explanation:
Because the exoskeleton cannot expand continuously, insects grow by molting. Ecdysis is the shedding stage in which the old cuticle is cast off.
