Male part of flowering plant

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Male reproductive organ in flowering plant is _______

Stamens

Stamens is made up of
an ______ (a male cone) and
a ________ (a long stalk)

Stamens is made up of
an anther (a male cone) and
a filament (a long stalk)

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1 anther usually contain 4 ______________ / pollen sacs

1 anther usually contain 4 microsporangia / pollen sacs

Microsporangia is a plural term for _______________

Microsporangia is a plural term for microsporangium

Microsporangium /
pollen sac

One of the chambers of an anther in which pollen grain is produced

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Microsporocyte /
microspore mother cell

A diploid cell in microsporangium
that divide by meiosis to
give rise to 4 haploid microspores (tetrad)

Microsporocyte / microspore mother cell (2n) undergo meiosis to produce microspore (n)

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Microsporocyte / microspore mother cell (2n) undergo meiosis to produce four microspores / tetrad (n)

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Define tetrad

A group of 4 haploid microspores (immature pollen grain) produced at the end of the second meiotic division

Microspores (tetrad)

A small haploid spore from a heterosporous plant species that develops into pollen grain / male gametophyte

Male gametophyte in flowering plant is

pollen grain

Each microspores divide once by mitosis to form pollen grain.
Pollen grain contain 2 cells:
generative cell
tube cell

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Each microspores divide once by mitosis to form pollen grain.
Pollen grain contain 2 cells:
generative cell
tube cell

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Generative cell / generative nucleus

Generative cell will divide by mitosis to form 2 non-motile sperm cells

Tube cell / tube nucleus

Tube cell will produce pollen tube. Pollen tube will deliver sperms to the egg.

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Pollen grain becomes mature after ___________

Pollen grain becomes mature after pollination

Pollination is

Pollination is transfer of pollen grain from the anther to a stigma

What happened to pollen when it landed on stigma?

- Tube nucleus will produce pollen tube
- Generative nucleus divide once by mitosis to produce 2 sperm nuclei (male gametes)
- Pollen tube will deliver sperms to the egg.