Types of Compound Leaves — NEET Biology
📚 Practice ConceptThe compound leaves may be of two types. In a pinnately compound leaf a
Which of the following statements regarding leaf structure and types are correct? S1: A leaf is considered simple if its lamina is entire or if, when incised, the incisions do not touch the midrib. S2: In a pinnately compound leaf, a number of leaflets are present on a common axis called the rachis, as seen in silk cotton. S3: Palmately compound leaves have leaflets attached at a common point, i.e., at the tip of the petiole, for example, neem. S4: A bud is present in the axil of the petiole in both simple and compound leaves, but never in the axil of leaflets of a compound leaf. S5: Leaves are lateral, generally flattened structures borne on the stem, originating from shoot apical meristems and arranged in an acropetal order.
View solution & NCERT explanation
Correct answer: B — S1, S4 and S5 are correct
The question pertains to the types and characteristics of leaves. Let's evaluate each statement: S1: This statement is correct. According to NCERT, a leaf is said to be simple when its lamina is entire or when incised, the incisions do not touch the midrib. S2: This statement is incorrect. While a pinnately compound leaf does have leaflets on a common axis (rachis), silk cotton is an example of a palmately compound leaf, not a pinnately compound leaf. Neem is an example of a pinnately compound leaf. S3: This statement is incorrect. While palmately compound leaves do have leaflets attached at a common point at the tip of the petiole, neem is an example of a pinnately compound leaf, not a palmately compound leaf. Silk cotton is an example of a palmately compound leaf. S4: This statement is correct. A bud is indeed present in the axil of the petiole in both simple and compound leaves, but not in the axil of leaflets of the compound leaf. S5: This statement is correct. Leaves are lateral, generally flattened structures borne on the stem, developing from shoot apical meristems and arranged in an acropetal order. Therefore, statements S1, S4, and S5 are correct, while S2 and S3 are incorrect. Option B correctly identifies the set of correct statements. Final Answer: The correct statements are S1, S4, and S5, which corresponds to option B. This question tests the understanding of different leaf types and their identifying features along with examples.
What does NCERT say about compound leaves may be?
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