A space occurs between nucellus and integument towards micropylar end. It is called.

Endostome

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Endothecium

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Endothelium

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Endosperm

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Solution

The correct option is A Endostome
Within the ovule, an opening is formed at the tip of the ovule due to absence of integuments is called the micropyle. It acts as a pore for the entry of the pollen tube into the ovule for fertilization. A Space occurs between nucellus and inner integument towards the micropylar end, is termed as endostome. Whereas opening formed by the outer integument is termed as exostome. Sometimes it is formed by both the integuments and termed as amphistome.

Thus, the correct answer is option A.

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Similar questions

Match the following

\begin{matrix} Column-I & Column-II (i) Micropyle & (a) Opposite to Micropyle (ii) Chalaza & (b) Female gametophyte (iii) Embryo Sac & (c) Pore of the ovule (iv) Nucellus & (d) Nutritive tissue (v) Ovule & (e) Integumented megasporangium \end{matrix}

Match the following

Column-I Column-II

(i) Micropyle (a) Opposite to Micropyle

(ii) Chalaza (b) Female gametophyte

(iii) Embryo Sac (c) Pore of the ovule

(iv) Nucellus (d) Nutritive tissue

(v) Ovule (e) Integumented megasporangium

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