In a field survey, an insect shows features related to cerci. What advantage does this feature provide?
Correct Answer: C. paired posterior sensory appendages in some insects
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
A lab note describes a case involving cuticle layers. What explanation best connects structure with function?
Correct Answer: A. epicuticle, exocuticle, and endocuticle
A lab note describes a case involving ecdysis. What should be written as the correct interpretation?
Correct Answer: B. shedding of the old cuticle to allow growth
A lab note describes a case involving chewing mouthparts. What should be written as the correct interpretation?
Correct Answer: B. mandibles cut and crush solid food
A lab note describes a case involving head capsule. What is the strongest biological explanation?
Correct Answer: D. a sclerotized structure bearing eyes, antennae, and mouthparts
During an entomology practical, a student observes epicuticle wax in an insect specimen. What should the student record as the main concept?
Correct Answer: D. reduces water loss from the insect body
During an entomology practical, a student observes antennae function in an insect specimen. What conclusion fits the specimen best?
Correct Answer: D. sensory detection of chemicals, touch, humidity, and air movement
During an entomology practical, a student observes piercing sucking mouthparts in an insect specimen. What should the student record as the main concept?
Correct Answer: B. stylets pierce tissue and suck fluids
During an entomology practical, a student observes cephalization in an insect specimen. What should the student record as the main concept?
Correct Answer: B. concentration of sensory and feeding structures at the anterior end
A researcher compares insect specimens while studying epicuticle wax. What conclusion should be made?
Correct Answer: A. reduces water loss from the insect body
A researcher compares insect specimens while studying antennae function. What conclusion should be made?
Correct Answer: B. sensory detection of chemicals, touch, humidity, and air movement
A researcher compares insect specimens while studying piercing sucking mouthparts. What conclusion should be made?
Correct Answer: C. stylets pierce tissue and suck fluids