After penetrating stigmatic and styler tissues, pollen tube usually grow down towards egg because

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1.Sexual Reproduction in Flowering Plants

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After penetrating stigmatic and styler tissues, the pollen tube usually grow down towards the egg because

The egg cell attracts the pollen tube as they have dissimilar electric charge

The filiform apparatus of synergids is believed to attract the pollen tube

It has no other passage to follow

It grows under control of nucleus

Solution

(b) In porogomy, filiform apparatus of synergids secretes, some chemotropically active substances, which direct the pollen tube towards micropyle of ovule.

Standard 12

Biology

Biologically most resistant plant material is

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Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers ?

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In an young anther the four rows of cells which later produce pollen are called

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Pollen tablets are available in the market for

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(NEET-2014)

Identify $A$ to $E$ in the following diagram

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After penetrating stigmatic and styler tissues, the pollen tube usually grow down towards the egg because

Solution

Similar Questions

Biologically most resistant plant material is

Draw the diagram of a microsporangium and label its wall layers. Write briefly about the wall layers ?

In an young anther the four rows of cells which later produce pollen are called

Pollen tablets are available in the market for

Identify $A$ to $E$ in the following diagram

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