Structure of a flower:
In summary:
A flower contains both male and female gametes. Stamen is the male reproductive part and Carpel is the female reproductive part.
Stamen: contains filaments and anthers.
Carpel: contains style, stigma, ovary.
Anther produces male gametes
Ovary contains female gametes
Pollination: the transfer of pollen from anther to stigma
Cross Pollination: when pollen is derived from another plant via insects or wind
Insect Pollinated Flower Adaptations:
1. Brightly coloured petals: attract insects
2. Sticky Stigma: insects can pass on pollen from other plants by sticking on it
3. Sticky Pollen grains: pollen can stick on insects as they go plant to plant.
Wind Pollinated Flower Adaptations:
1. Dull petals: it doesn't need to attract insects as they pollinate by wind.
2. Feathery stigma and long filament: catch pollen from other plants by wind
3. Small and light pollen grains: to be carried by the wind.
hi
ReplyDeleteThis rlly helps thanks a lot
Deleteshame and long fiber: get dust from different plants by wind . Little and
ReplyDeletelight dust grains: to be conveyed by the breeze.
pollen from other plants by wind. Small and
ReplyDeletelight pollen grains: to be carried by the wind.
Hey There. I found your blog using MSN. This is an extremely well written article. I will be sure to bookmark it and come back to read more of your useful information. Thanks for the post. I’ll certainly come back.Sugar wastewater treatment company
ReplyDelete