MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
Choose an option to check your answer.
A.
wing veins that strengthen the abdomen
B.
hormonal glands that control molting
C.
small cervical plates allow flexible head movement
D.
digestive plates that crush food
Show Answer
Correct Answer: C. small cervical plates allow flexible head movement
Explanation:
The insect neck contains cervical sclerites and membranes. This arrangement allows the head to move while still connecting it firmly to the thorax.
Choose an option to check your answer.
A.
antennae become chewing jaws
B.
wings become endocrine glands
C.
hind legs flatten for swimming
D.
modified forelegs grasp prey
Show Answer
Correct Answer: D. modified forelegs grasp prey
Explanation:
Raptorial forelegs are adapted for catching and holding prey. The praying mantis is a classic example of this predatory modification.
Choose an option to check your answer.
A.
muscles change thoracic shape to move wings indirectly
B.
muscles attach only to antennae
C.
muscles attach directly to wing bases
D.
muscles work only during molting
Show Answer
Correct Answer: C. muscles attach directly to wing bases
Explanation:
Direct flight muscles attach to wing bases and move wings directly. This mechanism occurs in some insect groups and allows controlled wing motion.
Choose an option to check your answer.
A.
internal endocrine glands
B.
paired posterior sensory appendages in some insects
C.
mouth hooks used for sucking nectar
D.
wing veins in the mesothorax
Show Answer
Correct Answer: B. paired posterior sensory appendages in some insects
Explanation:
Cerci are paired appendages at the end of the abdomen in some insects such as cockroaches. They often detect air movements or touch.
Choose an option to check your answer.
A.
rapid wing beats and precise control keep the insect in one position
B.
continuous molting during flight
C.
conversion of wings into legs
D.
loss of thoracic muscles
Show Answer
Correct Answer: A. rapid wing beats and precise control keep the insect in one position
Explanation:
Hovering requires strong flight muscles and fine control of wing movement. Many flies and some bees can maintain position in air while feeding or surveying the environment.
Choose an option to check your answer.
A.
hormonal glands that control molting
B.
digestive plates that crush food
C.
wing veins that strengthen the abdomen
D.
small cervical plates allow flexible head movement
Show Answer
Correct Answer: D. small cervical plates allow flexible head movement
Explanation:
The insect neck contains cervical sclerites and membranes. This arrangement allows the head to move while still connecting it firmly to the thorax.
Choose an option to check your answer.
A.
modified forelegs grasp prey
B.
antennae become chewing jaws
C.
hind legs flatten for swimming
D.
wings become endocrine glands
Show Answer
Correct Answer: A. modified forelegs grasp prey
Explanation:
Raptorial forelegs are adapted for catching and holding prey. The praying mantis is a classic example of this predatory modification.
Choose an option to check your answer.
A.
muscles change thoracic shape to move wings indirectly
B.
muscles attach directly to wing bases
C.
muscles attach only to antennae
D.
muscles work only during molting
Show Answer
Correct Answer: B. muscles attach directly to wing bases
Explanation:
Direct flight muscles attach to wing bases and move wings directly. This mechanism occurs in some insect groups and allows controlled wing motion.
Choose an option to check your answer.
A.
wing veins in the mesothorax
B.
internal endocrine glands
C.
paired posterior sensory appendages in some insects
D.
mouth hooks used for sucking nectar
Show Answer
Correct Answer: C. paired posterior sensory appendages in some insects
Explanation:
Cerci are paired appendages at the end of the abdomen in some insects such as cockroaches. They often detect air movements or touch.
Choose an option to check your answer.
A.
small cervical plates allow flexible head movement
B.
hormonal glands that control molting
C.
digestive plates that crush food
D.
wing veins that strengthen the abdomen
Show Answer
Correct Answer: A. small cervical plates allow flexible head movement
Explanation:
The insect neck contains cervical sclerites and membranes. This arrangement allows the head to move while still connecting it firmly to the thorax.
Choose an option to check your answer.
A.
antennae become chewing jaws
B.
hind legs flatten for swimming
C.
wings become endocrine glands
D.
modified forelegs grasp prey
Show Answer
Correct Answer: D. modified forelegs grasp prey
Explanation:
Raptorial forelegs are adapted for catching and holding prey. The praying mantis is a classic example of this predatory modification.
Choose an option to check your answer.
A.
muscles work only during molting
B.
muscles attach directly to wing bases
C.
muscles attach only to antennae
D.
muscles change thoracic shape to move wings indirectly
Show Answer
Correct Answer: B. muscles attach directly to wing bases
Explanation:
Direct flight muscles attach to wing bases and move wings directly. This mechanism occurs in some insect groups and allows controlled wing motion.
