Name: Fruits
Uploaded: 2019-07-19
Duration: 5 min 59 s
Description: So, what happens to the ovary after flowering? Let's watch this video to learn about fruits, and the secret they all hide deep within themselves.

Question

Describe the structure of monocotyledonous seed with a labelled diagram.

Accepted Answer

Seeds are the structures formed from the ovules after fertilization. Each seed consists of an embryo with sufficient reserve food materials surrounded by a seed coat. Based on the number of cotyledons, these can be divided into two: monocotyledonous seeds and dicotyledonous seeds.

The monocotyledonous seed contains only one cotyledon. It contains seed coat, hilum, endosperm and embryo.
i) Seed coat: It is the outermost layer in a seed. In the seeds of maize, rice, etc., the seed coat is not distinct. It is fused with pericarp.
ii) Hilum and micropyle: Hilum is a small scar and the micropyle represents small pore on the seeds. These are not clearly visible in monocot seeds.
iii) Endosperm: It is the nutritive tissue of the seeds and is surrounded by one cell thick aleurone layer. It is rich in protein.

iv) Embryo: The embryo consists of the following parts;

Cotyledon: The monocot seed contains a single thin, papery cotyledon called scutellum. It is present near the endosperm.

Plumule: It represents the growing tip of the shoot along with embryonic leaves. It is covered with a sheath called coleoptile.

Radicle: It is present at the lower part of the seed and covered by a root cap. It is surrounded by a protective sheath called coleorhiza.

Describe the structure of monocotyledonous seed with a labelled diagram.

Important Questions on Morphology of Flower, Fruit and Seed

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