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Biology- Ch 3 - L2
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An important function of plants is to..
reproduce
What is to reproduce?
to make more of the same kind/ produce offspring
Flowering plants and conifers reproduce by ...
Seeds
Give example of 2 plants that reproduce by seeds.
Daffodills (flowering) / Conifers (cones)
Non-flowering plants reproduce by ...
Spores
Give 2 examples of plants that reproduce by spores
Ferns (non-flowering/ vasular) and mosses (non flowering non-vascular)
What is a "stamen" ?
-The male part - surround the pistill - produce pollen that contains sperm cells.
What is a "Pistill" ?
- Female part - contains an ovary
What is an "Ovary" ?
- In the pistill - produces egg cells - The place where egg cells and sperm cells are combined to produce seeds.
Petals
- Colourful - Protect the part that makes seeds - Attract seeds, butterflies, birds, and other organisms.
Sepals
- green leaf part - cover and protect the flower bud
What is the male part of a flower? What does it produce?
Stamen - pollen (sperm cells)
What is the female part of a flower? What does it produce? where?
Pistill / egg cells in the ovary
What is "pollination" ?
The transfer of pollen from stamen to pistill
What is "Nectar" ?
a liquid that flowers produce and bees love.
How can bees contribute to the process of "Pollination" ?
They can move the pollen to the pistill when they absorb the nectar
Which part of the flower produces pollen that contains sperm cells?
stamen
Which part of the flower is the ovary in?
pistill
What is "fertilization" ?
Occurs when the sperm cell and the egg cell combine inside the ovary to make seeds. This happens after pollination.
What happens after pollination?
Fertilization
What does "scattering of seeds" means?
Seed dispersal
What does "Seed dispersal" mean?
Scattering of seeds (plant/ animals/ wind..)
What is "Germinate / Germination) ?
Sereds grow to a plant
Meaning: Life Cycle of plant
Includes all of the changes the plant goes through from fertilization to death.
What are the steps of the life cycle of a plant?
...
Wha do plants need to germinate?
Water/ Oxygen / temperature
Germinate / Germination
Grow
Meaning: Seed dispersal
Scattering of the seed
What do we call the process of the scattering of the seed?
Seed disperal