Correct option is D
Identifying the Labeled Parts in the Diagram:
A - Lodicule:
- Lodicules are small, fleshy, scale-like structures located at the base of the flower.
- They swell during anthesis (flower opening) to push apart the lemma and palea, facilitating pollination.
- The labeled A is at the base, which aligns with the lodicule.
- Function: Facilitate flower opening by swelling and separating the lemma and palea.
- Significance: Essential for wind pollination in grasses like wheat, rice, and maize.
B - Palea:
- The palea is a bract-like structure found inside the lemma.
- It provides protection to the reproductive structures alongside the lemma.
- It is generally thinner and more rigid than the lemma.
- The labeled B corresponds to the palea.
- Function: Works with the lemma to protect the flower’s reproductive structures.
- Position: Found inside the lemma, partially enclosing the reproductive organs.
C - Lemma:
- The lemma is the outer, larger bract enclosing the reproductive organs.
- It is more prominent than the palea and helps in protecting the developing flower.
- The labeled C, which is the larger enclosing structure, represents the lemma.
- Function: A protective bract that covers the reproductive parts of the flower.
- Significance: Larger than the palea and provides primary structural support.

