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Select the option that correctly identifies the three labeled floral parts in the floral diagram of a grass flower:​​​
Question

Select the option that correctly identifies the three labeled floral parts in the floral diagram of a grass flower:



​​

A.

A - palea, B - lemma, C - lodicule

B.

A - lemma, B - lodicule, C - stamen

C.

A - palea, B - stamen, C - lemma

D.

A - lodicule, B - palea, C - lemma

Correct option is D

Identifying the Labeled Parts in the Diagram:

  1. 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.
  2. 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.
  3. 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.

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