pollen

Pollen is a fine to coarse powdery substance comprising pollen grains which are male microgametophytes of seed plants, which produce male gametes (sperm cells). Pollen grains have a hard coat made of sporopollenin that protects the gametophytes during the process of their movement from the stamens to the pistil of flowering plants, or from the male cone to the female cone of coniferous plants. If pollen lands on a compatible pistil or female cone, it germinates, producing a pollen tube that transfers the sperm to the ovule containing the female gametophyte. Individual pollen grains are small enough to require magnification to see detail. The study of pollen is called palynology and is highly useful in paleoecology, paleontology, archaeology, and forensics. Pollen in plants is used for transferring haploid male genetic material from the anther of a single flower to the stigma of another in cross-pollination. In a case of self-pollination, this process takes place from the anther of a flower to the stigma of the same flower.
Green spider - Spider on a yellow flower.
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Green spider

Added month ago by Zeta

48

flowers - nature itself - ladybird on a flower petal
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flowers - nature itself

Added 2 months ago by Basiunia

139

Colorful flowers - colorful jigsaw puzzle
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Colorful flowers

Added 3 months ago by andi

122

Flower-abstraction - colorful jigsaw puzzle
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Flower-abstraction

Added 3 months ago by andi

228

flower like ghosts - a flower that looks like a ghost
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flower like ghosts

Added year ago by żaba

17

Colorful butterfly - colorful puzzle jigsaw
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Colorful butterfly

Added year ago by andi

70

sunflower - colorful sunflower puzzle
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sunflower

Added year ago by andi

67

flowers - complicated puzzle
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flowers

Added year ago by andi

51

Floral composition - complicated puzzle
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Floral composition

Added year ago by andi

48

Abstraction - complicated puzzle
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Abstraction

Added year ago by andi

51

florist - complicated puzzle
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florist

Added year ago by andi

134

On a meal - the insect is eating the nectar from the flower
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On a meal

Added year ago by andi

57

nature - drinking floral nectar
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nature

Added year ago by stenia

103

flowers c.d - butterflies and flowers in the garden
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flowers c.d

Added year ago by stachna

146 2

sweet m 1 - flower of foxglove and her guest ...
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sweet m 1

Added year ago by biedronka ela

133

Lavender bees - bees on a lavender field
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Lavender bees

Added year ago by Ala

97

Sunflower... - Sunflower with a veeery close up
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Sunflower...

Added year ago by Maria Teresa

128

flower one night - what a flower inside
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flower one night

Added year ago by Basiunia

288

bee migration - bee, fly, stripes, wings
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bee migration

Added year ago by wieslawa

55

floral rug - spring flowers in the meadow
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floral rug

Added year ago by Iga

91

Bee - Bee collects nectar from flowers
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Bee

Added year ago by Gosia

54

spring right, right - spring daisy and ladybird
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spring right, right

Added year ago by Julita

85 1

apeoperaia - l'ape sta lavorando e c'è un bel fiore
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apeoperaia

Added year ago by aperegina22

91

słonecznik - słonecznik jak słońce
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słonecznik

Added year ago by Bożenka

107