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Transcript of Plant Reproduction
Plants are producers and need certain things to make their own food.
(Hint: Produce means "to make")
They need sunlight, carbon dioxide, and water.
Everything you forgot...
One cell can split into two, giving you two identical cells. That type is asexual reproduction.
The second type is when two cells, each with half of the DNA needed, combine and create a living cell. That type is sexual reproduction.
a type of tree
that makes cones
Conifers have two types of cones on the same tree.
One of the cone types gives off pollen.
The other type of cone catches the pollen
blown by the wind. This grows into a
zygote (a baby conifer) that eventually lives in a seed.
Pollen from one cone is transferred
to another, then a seed can form.
This year we have studied many amazing things, and you have gained a deeper understanding of the world around you.
But did you know that if you don't practice what you have learned, you will forget it?
I know that you can describe plant adaptations with ease, but let's review the basics.
Plants use these ingredients to make a type of sugar called glucose that it uses to grow and reproduce.
Conifers are another type of non-flowering plant.
90% of the plant kingdom is made up of flowering plants.
Did you know that there are plants that have both male and female parts in the flower? Other flowering plants have only male or female parts.
Pollen from the stamen has to be transferred to the pistil so that an a zygote can be formed in the ovary. Once this occurs, a seed or fruit is formed. How is pollen transferred?
When plants reproduce asexually, the new plants are clones of the original plant. Strawberry and raspberry bushes send out shoots that touch the ground. New roots grow at the point of contact, and a new plant is formed. Some trees grow special roots that form new shoots above ground.
Flowering and Non-flowering Plants with Seeds
Plants with flowers.
Angie likes flowers
Jim (Gym) likes seeds.
Plants with seeds, but no flowers.
Reproduction with Spores
Mosses, mushrooms, and ferns reproduce with spores. Spores are seed-like structures that produce new plants, but they do not develop in flowers or cones.
The Plant Cell
The plant cell is different than an animal cell. It has rigid cell walls to give the plant support, and it contains chlorophyll in the chloroplasts. This green substance captures the sun's energy to change carbon dioxide and water into glucose, the special sugar that plants use as nutrients. Animals (like us) in turn consume that glucose when we eat plants. We also need that to power our cells.