Question:
Choose the mismatched pair regarding cockroach
Choose the mismatched pair regarding cockroach
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Taste receptors occur on insect tarsi, whereas olfactory receptors are mainly present on the antennae.
Updated On: Jun 12, 2026
- Cornea $\rightarrow$ Refraction
- Tympanal organs $\rightarrow$ Auditory
- Diurnal insects $\rightarrow$ Apposition images
- Sensillae on tarsus $\rightarrow$ Olfactory organs
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The Correct Option is D
Solution and Explanation
Concept:
Different sensory structures of insects are specialized for detecting specific environmental stimuli.
Step 1: Examine cornea. The cornea helps refract incoming light rays and therefore assists in image formation. This pair is correctly matched.
Step 2: Examine tympanal organs. Tympanal organs detect sound vibrations and function as auditory organs. This pair is correctly matched.
Step 3: Examine apposition eyes. Diurnal insects possess apposition compound eyes which function effectively in bright light. This pair is correctly matched.
Step 4: Examine sensillae on tarsus. Sensillae present on the tarsus are primarily gustatory receptors responsible for taste. Olfactory receptors are generally located on antennae. Therefore this pair is mismatched.
Step 5: Final conclusion. The incorrect pair is: \[ \boxed{\text{Sensillae on tarsus} \rightarrow \text{Olfactory organs}} \] Hence option (D) is correct.
Step 1: Examine cornea. The cornea helps refract incoming light rays and therefore assists in image formation. This pair is correctly matched.
Step 2: Examine tympanal organs. Tympanal organs detect sound vibrations and function as auditory organs. This pair is correctly matched.
Step 3: Examine apposition eyes. Diurnal insects possess apposition compound eyes which function effectively in bright light. This pair is correctly matched.
Step 4: Examine sensillae on tarsus. Sensillae present on the tarsus are primarily gustatory receptors responsible for taste. Olfactory receptors are generally located on antennae. Therefore this pair is mismatched.
Step 5: Final conclusion. The incorrect pair is: \[ \boxed{\text{Sensillae on tarsus} \rightarrow \text{Olfactory organs}} \] Hence option (D) is correct.
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