Life Cycles Flashcards
Define POLLINATION.
When pollen from the male parts of the flower reach the female parts of the flower.
Define GERMINATE.
Begin to sprout or grow into a seedling
Define FERTILISATION.
When male cells in pollen join eggs in the female parts of the flower to form seeds.
In a flower, what is the ANTHER?
The male part that produces pollen.
In a flower what is the STIGMA?
The sticky female part that catches pollen.
In a flower what is the STYLE?
The part that supports the stigma and leads to the ovary.
What is the role a flower’s petals?
To attract birds and insects.
In a flower, what is the role of the FILAMENT?
It supports the anther.
In a flower, what is the role of the OVARY?
Stores the ova that become seeds when fertilized.
What is the difference between INTERNAL and EXTERNAL FERTILISATION?
In internal FERTILISATION male sperm is deposited inside the female’s body. In external FERTILISATION eggs are fertilized outside the females body.
List the key stages in the life cycle of a plant.
Germination, growth of taproot, plant matures, pollination, FERTILISATION, fruit ripens, seeds are dispersed.
List the key stages in the life cycle of a mammal.
FERTILISATION, pregnancy, birth, young animal grows, animal matures.
Define LIFE CYCLE.
The stages through which a living thing passes during its life.
Where does a female frog lay her eggs?
In the water.
