Question 5 0.5 pts Which of the following is NOT true of cotyledons? O Their num

Question

Question 5 0.5 pts Which of the following is NOT true of cotyledons? O Their number (one or two) represent synapomorphies for the Monocots and Eudicots, respectively. O These structures are part of the wall of the ovary, which typically enlarges after fertilization to form the fruit. O They develop from the zygote and are contained within the seed O They may become photosynthetic following germination of the seed. O They may serve as digestive organs within the seed, absorbing nutrition from the endosperm

Explanation / Answer

Ans. 1.True.

When the seed germinates, the monocot will form one seed leaf and the eudicots forms the two seed leaves.

2. False.

The cotyledon is not the part of the wall of the ovary,instead it is the part of the embryo within the seed of a plant. It is formed during embryogenesis and therefore present in the seed prior to germination.

3. True.

Cotyledons develop from the zygote during embryogenesis and contained within the seed.

4. True.

In case of dicot seedlings, the Cotyledons are photosynthetic and functionally similar to leaves.

5. True.

The Cotyledons of grasses and many other monocotyledons is a highly modified leaf which is composed of scutellum and coleoptile. The scutellum is the tissue present within the seed and is specialised to absorb stored food from the endosperm.

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