NEET · Biology · STD 11 - 7. Structural organisation in animal

Which of the following characteristics is incorrect with respect to cockroach?

A A ring of gastric caeca is present at the junction of midgut and hind gut.
B Hypopharynx lies within the cavity enclosed by the mouth parts.
C In females, \(7^{\text {th }}-9^{\text {th }}\) sterna together form a genital pouch.
D \(10^{\text {th }}\) abdominal segment in both sexes, bears a pair of anal cerci.

Verified Solution

Answer & Solution

Correct Answer

(A) A ring of gastric caeca is present at the junction of midgut and hind gut.

Step-by-step Solution

Detailed explanation

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

Same subject

Explore more questions on app

From NEET

Explore more questions on app