A researcher compares insect specimens while studying cephalization. What explanation best matches the observation?
Correct Answer: A. concentration of sensory and feeding structures at the anterior end
MCQ Collection
BS Zoology Semester Exam MCQs
Practice BS Zoology Semester Exam questions with answers and explanations.
In a field survey, an insect shows features related to epicuticle wax. What function is most directly supported?
Correct Answer: C. reduces water loss from the insect body
In a field survey, an insect shows features related to antennae function. What role does this adaptation play?
Correct Answer: C. sensory detection of chemicals, touch, humidity, and air movement
In a field survey, an insect shows features related to piercing sucking mouthparts. What role does this adaptation play?
Correct Answer: C. stylets pierce tissue and suck fluids
In a field survey, an insect shows features related to cephalization. What function is most directly supported?
Correct Answer: D. concentration of sensory and feeding structures at the anterior end
A lab note describes a case involving epicuticle wax. What should be written as the correct interpretation?
Correct Answer: D. reduces water loss from the insect body
A lab note describes a case involving antennae function. What is the strongest biological explanation?
Correct Answer: C. sensory detection of chemicals, touch, humidity, and air movement
A lab note describes a case involving piercing sucking mouthparts. What explanation best connects structure with function?
Correct Answer: B. stylets pierce tissue and suck fluids
A lab note describes a case involving cephalization. What is the strongest biological explanation?
Correct Answer: D. concentration of sensory and feeding structures at the anterior end
During an entomology practical, a student observes epidermis role in an insect specimen. What conclusion fits the specimen best?
Correct Answer: D. secretes the cuticle and helps form new cuticle during molting
During an entomology practical, a student observes filiform antenna in an insect specimen. What conclusion fits the specimen best?
Correct Answer: A. thread-like antenna with nearly uniform segments
During an entomology practical, a student observes siphoning mouthparts in an insect specimen. What conclusion fits the specimen best?
Correct Answer: B. a long proboscis sucks nectar