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What is photosynthesis?
Plants make their own food.
What gives the green colour to plants?
Chlorophyll.
What does chlorophyll do?
Chlorophyll traps sunlight.
What do leaves absorb from the air during photosynthesis?
Carbon dioxide.
What is raw sap?
Mixture of water and minerals.
What are the xylem vessels?
Tubes which transport raw sap.
What gas do plants release during photosynthesis?
Oxygen.
What is elaborated sap?
Plant´s food.
What are the phloem vessels?
Tubes which transport elaborated sap.
Why are ferns, angiosperms and gymnosperms vascular plants?
They have tubes called vessels.
When do plants breathe?
During day and night.
How does the gas exchange happen in the leaves?
Through tiny openings called stomata.
What do the female reproductive organs of angiosperms produce?
Ovules.
What do the male reproductive organ of angiosperms produce?
Pollen
What is pollination?
When pollen travels from the anther to the stigma.
When does fertilisation occur?
When pollen reaches an ovule in the ovary.
