Question

write about the significance of seeds
define regma ,achene,siliqua​

Answer 1

Answer:

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Explanation:

• Fruit: Type # 1. Simple Fruits:

When the ovary of a flower with or without other accessory floral parts converts into a single fruit, the fruit is said to be a simple fruit. It may be dry or fleshy.

The dry fruits may further be classified into:

(i) Dehiscent,

(ii) Indehiscent and

(iii) Schizocarpic fruits.

(i) Dry Dehiscent Fruits:

(a) Legume or pod:

This type of simple dry fruit is monocarpellary, developing from a superior, one chambered ovary. It dehisces by both the sutures. Typical examples are found in Leguminosae family, e.g., pea, bean, pulses, gram and many others.

(b) Follicle:

This type of simple dry fruit is monocarpellary, developing from a superior, one-chambered ovary like the legume fruit, but it dehisces by one suture only as in Calotropis (Ak), Asclepias, Vinca rosea (Sadabahar), Michelia, etc.

(c) Siliqua:

This is a long, narrow, many seeded fruit which develops from a superior bicarpellary ovary with two parietal placentae. It dehisces from below upwards by both the sutures Here the ovary is one-chambered at first, but later on it becomes two-chambered because of the development of a flase septum, the replum, which extends from one placenta to another.

This type of fruit is commonly found in Brassicaceae (Cruciferae), e.g., mustard, radish, Eruca, etc.

(d) Silicula:

When a siliqua fruit becomes much shorter and flattened and as broad as it is long with a few seeds, it is called silicula, e.g., Capsella and candytuft (Iberis amam).

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