Palmately compound leaf is the one in which the leaflets develop from a common point i.e. at the tip of:
petiole.
— Concept: This question tests your understanding of leaf morphology, specifically the structure of a palmately compound…Concept: This question tests your understanding of leaf morphology, specifically the structure of a palmately compound leaf.
Why (C) is correct: In a palmately compound leaf, the leaflets radiate from a single point, much like the fingers from the palm of a hand. This common point of attachment for the leaflets is the tip of the petiole (leaf stalk).
Why other options are wrong:
- (A) rachis: A rachis is the main axis of a pinnately compound leaf, where leaflets are arranged along its length, not radiating from a single point.
- (B) stipule: Stipules are small, leaf-like appendages found at the base of the petiole, not where leaflets attach.
- (D) nodes: Nodes are points on a stem where leaves or branches originate, not the attachment point for leaflets within a single compound leaf.
NEET Tip: Remember the analogy: 'palmately' like your 'palm' where fingers (leaflets) originate from one point (tip of petiole). 'Pinnately' like a 'feather' where barbs (leaflets) are arranged along a central axis (rachis).
Correct Answer: (C)
petiole.