Morphology of Flowering Plants — Practice

Question 1

How would you distinguish a potato tuber from a root?

Accepted Answer

A potato tuber bears nodes (eyes) with buds, which is a feature of stems. Roots have no nodes or buds, so the potato is a modified underground stem.

Question 2

Differentiate between racemose and cymose inflorescence.

Accepted Answer

In a racemose inflorescence the main axis grows continuously and flowers open in acropetal succession (oldest at the bottom). In a cymose inflorescence the main axis ends in a flower and growth continues from lateral buds, with flowers opening in basipetal succession (oldest at the top).

Question 3

What is a false fruit? Give one example.

Accepted Answer

A false fruit develops from floral parts in addition to the ovary, such as the thalamus. Example: apple, where the fleshy edible part is the thalamus.

Question 4

What is phyllotaxy? Name its types.

Accepted Answer

Phyllotaxy is the arrangement of leaves on the stem. Types: alternate (one leaf per node), opposite (two per node), and whorled (three or more per node).

Question 5

Give one example each of a storage root, a prop root, and a pneumatophore.

Accepted Answer

Storage root: carrot (or radish/beetroot). Prop root: banyan. Pneumatophore: Rhizophora (mangrove breathing root).

Practice — Morphology of Flowering Plants

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