Question

Read the assertion and reason carefully to mark the correct option in question.

Assertion: In monocotyledonous seed, a single shield-shaped cotyledon called scutellum and a short axis with a plumule and radicle are present.

Reason: The plumule and radicle are enclosed in sheaths which are called coleorhiza and coleoptile respectively.

• A. If both assertion and reason are true but reason is not the correct explanation of the assertion.
• B. If both assertion and reason are true and the reason is the correct explanation of the assertion.
• C. If the assertion is true but the reason is false.
• D. If both assertion and reason are false.

Answer 1

The correct option is C If the assertion is true but the reason is false.

Assertion-Reason relation

• The group of plants having a single cotyledon in their embryo is known as monocots. The monocotyledonous seed consists of a single cotyledon known as scutellum, which is shield-like. It has an embryonal axis bearing the plumule and the radicle. Hence, the assertion statement is correct.
• In a monocot embryo, the sheath enclosing plumule is known as coleoptile and the sheath enclosing radicle is coleorhiza. Hence, the reason statement is incorrect.

Final answer: c. If the assertion is true but the reason is false.