pollen tube

Noun

Meaning

(botany) a slender tubular outgrowth from a pollen grain when deposited on the stigma for a flower; it penetrates the style and conveys the male gametes to the ovule

Hypernyms

Examples

As the pollen tube grows, it makes its way from the stigma, down the style and into the ovary. Source: Internet

Flowering plants main The pollen tube does not directly reach the ovary in a straight line. Source: Internet

It travels near the skin of the style and curls to the bottom of the ovary, then near the receptacle, it breaks through the ovule through the micropyle (an opening in the ovule wall) and the pollen tube "bursts" into the embryo sac. Source: Internet

In higher plants and some algae and fungi, fertilization involves the migration of the sperm nucleus through a fertilization tube (e.g. pollen tube in higher plants) to reach the egg cell. Source: Internet

Hydrolytic enzymes are secreted by the pollen tube that digest the female tissue as the tube grows down the stigma and style; the digested tissue is used as a nutrient source for the pollen tube as it grows. Source: Internet

The growth of the pollen tube is controlled by the vegetative (or tube) cytoplasm. Source: Internet

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