Question

Given below are two statements:
Statement I: Spermatozoa of fowl is hook-shaped
Statement II: Appendix testis is present in equine
In the light of the above statements, choose the most appropriate answer from the options given below

• A. Both Statement I and Statement II are correct
• B. Both Statement I and Statement II are incorrect
• C. Statement I is correct but Statement II is incorrect
• D. Statement I is incorrect but Statement II is correct

Hint:

Sperm Head Shapes:
Avian Fowl = Slender, cylindrical, VERMICULIFORM Filiform.
Bull Ram Boar = Flat, oval, paddle-shaped.
Rodents (Rat/Mouse) = HOOK-shaped Falciform.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
Comparative spermatozoa morphology and testicular embryonic vestigial structures across domestic avian and mammalian species.

Step 2: Detailed Explanation:
1. Statement I: Fowl (Rooster) spermatozoa are characterized by a long, slender, cylindrical, vermiculiform (filiform worm-like) head with a sharply pointed conical acrosome, NOT hook-shaped. (Hook-shaped sickle sperm heads are characteristic of Rodents [rats, mice]). Hence, Statement I is incorrect.
2. Statement II: The Appendix Testis (Hydatid of Morgagni)ā€”a developmental embryonic vestige of the cranial end of the paramesonephric (MĆ¼llerian) ductā€”is present at the cranial pole of the testis/epididymal head in equines (stallion) and primates. Hence, Statement II is correct.

Step 3: Final Answer:
Therefore, Statement I is incorrect but Statement II is correct, corresponding to option (D).