6.6 Pollination

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

NOTE. 6.5 FLOWERS

GROWTH

Germination

Pollination

Fertilisation

Seed formation

Seed dispersal

fertilisation

seed dispersal

NOTE 6.5 FLOWERS 

NOTE. 6.6 A game of attraction

Perfect flower (both male & female)

Imperfect flower (male)

Imperfect flower (female)

TYPES OF POLLINATION

POLLINATORS : ANIMALS/WIND

Pollination by wind

Wind pollinated plants spread their pollen through wind. The flowers look a lot different with the stamen hanging outside the flowers and the carpels having a feathery look. People with hay fever are allergic to the pollen of wind pollinated plants. 

Pollination by animals
(insectflowers) 

- large and strikingly* coloured petals (UV)

- scent and nectar.

- sticky pollen grains

Self-pollination and cross-pollination

Cross-pollination, self-pollination or no pollination?

Perfect or imperfect flowers?

WIND POLLINATED PLANTS

ANIMAL POLLINATED PLANTS

Bright flowers

Grasses

Pollen grains are light 

Nectar

Nice smell

Long stamens & carpels

Feathery stigmas

Produce LOTS of pollen

Pollen grains are sticky & have a rough surface

Sticky stigmas