3209836
Descrição
Mapa Mental por Shubh Malde, atualizado more than 1 year ago
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Criado por Shubh Malde
mais de 9 anos atrás
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Plant reproduction
- A plants anther produce the male sex cell (pollen)
and the ovary makes the female sex cells (in the
ovule)
- Fertilisation-A pollen grain starts to grow if it lands on the stigma
of a flower of the correct species. A pollen tube grows through the
tissues of the flower until it reaches an ovule inside the ovary. The
nucleus of the pollen grain (the male gamete) then passes along the
pollen tube and joins with the nucleus of the ovule (the female
gamete). This process is called fertilisation.
- After fertilisation ovules become
seeds and the ovary wall forms the
rest of the fruit.
- Plants compete with each other for
factors such as: light, water, space and
minerals in the soil
- Seeds must be dispersed or spread away
from each other and from the parent plant. This
is to reduce competition between the parent
plant and the new plants, and between the new
plants.
- Dispersion methods
are wind, animal (in
and out) and
self-propelled (like a
bomb)
Anexos de mídia
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