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Life-sustaining processes and survival of species

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Presentation on theme: "Life-sustaining processes and survival of species"— Presentation transcript:

1 Life-sustaining processes and survival of species
Reproductive mechanisms in plants

2 What is asexual reproduction in plants
It can happen naturally or artificially through cutting or layering. It can also happen through a special organ, like a bulb (e.g. tulips) or a tuber (e.g. potatoes).

3 Example of asexual reproduction
Cutting: One part of the plant (stem, leaves, roots) is cut off and takes root.

4 Example of asexual reproduction
Layering : A stalk takes root in the soil without detaching from the plant.

5 Example of asexual reproduction
Reproduction through bulbs: A bulb is a sort of bud that ensures life in slow motion.

6 Example of asexual reproduction
Reproduction through tubers : A Tuber is a round stem. Each of its buds can turn into a new stem.

7 What is sexual reproduction in plants
It is the main way that plants reproduce. This varies depending on the type of plant: for example, ferns use spores, evergreens use pinecones, and flowering plants use flowers.

8 Flowering plants, sexual reproduction stages

9 Parts of a flower Stamen : Flower’s male organ
Pistil : Flower’s female organ

10 Part of a flower Stamen is composed of: Filament (long stem)
Anther (covered of pollen) Pollen (Sperm)

11 Part of a flower Pistil is composed of: Ovary (contains ovule)
Style (Long tube) Stigma (Entrance of the pistil)

12 Part of a flower Petals (bright colour = attract insects)
Sepals (support for the flower) Peduncle (support for the flower) This flower has both male and female parts. However, in some species, there are male flowers and female flowers.

13 Stages of sexual reproduction in flowering plants

14 Stages of sexual reproduction in flowering plants

15 Stages of sexual reproduction in flowering plants

16 Stages of sexual reproduction in flowering plants

17 Life cycle of a flowering plant


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