Tuesday, 27 March 2012

Activity 2-Plantae

Key Characteristics

Non-Flowering Plants

- Reproduces through spores

- Does not have flowers

- Asexual reproduction

- It has great adaptability

Flowering Plants

The flower is the reproductive organ of all flowering plants.

-male reproduction parts
The stamen is made up of two main parts:
1. The filament is a stalk which supports the anther.
2. The anther is where the pollen (sperm) is made, and the pollen travels to the stigma on the female part of the plant.

-female reproduction parts
The pistil is made up of three main parts:
1. On the top is the stigma. It's sticky, and collects the pollen from the anther. Either self-pollination (within the same plant) or cross-pollination (between two different plants) occurs.
2. In the middle is the style, the thin, slender tube which connects the stigma to the ovary. Pollen travels through it to get to the ovary.
3. The ovary is where fertilization takes place. It makes ovules (eggs). The ovules unite with the pollen. A fertilized egg becomes a seed and the ovary develops into a fruit.

-produces fruit
Unlike non-flowering plants, flowering plants produce fruits after the flower is being fertilized. The flower withers away and the fruit starts to grow.

produces seeds
Seeds are produced by all flowering plants. Seeds are dispersed in different ways, some of the examples are by wind, by clinging onto the fur of animals and by water.

done by:
Jee Hoon, Dhruti, Zhong Han

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