Insect & Wind Pollinated

Flowers

Jassim Al-ThaniKhalid Al-Thani

Mohammed Al-Attiya

Introduction • Structure and adaption of insect pollinated flowers• Structure and adaption of wind pollinated flowers• Growth of the pollen tube followed by fertilization• Summary

Structure of insect pollinated flowers and its adaption for pollination

• Stamens inside the flower to make the insect touch

• Stigma inside the flower to make the insect touch

• Stigma is sticky to make the pollen grins attach from the insect

• Petals are large to attract insects• Petals are brightly colored to

attract insects• Nectaries produce nectar (Like

Sugar) to reward the insect for pollinating the flower

• Pollen grains are large and sticky so that grains stick to the insect

Structure of wind pollinated flowers and its adaption for pollination

• Stamens loosely connected and exposed so the wind can easily take it away

• Stigma exposed to catch pollen blowing in the wind

• Stigma feathery to catch pollen grain blowing in the wind

• Small dull colored petals has no need to attract insects or living helpers

• Nectaries are not present doesn't have to reward any living helper

• Pollen grains are small, smooth and inflated so the wind can easily take it away

Growth of the pollen tube followed by fertilization

Seeds

Nucleus of pollen must fuse with nucleus of ovum (egg)

1. Pollen grain grows a tube2. Tube digests its way through

style to ovary 3. Tube grows around ovule 4. Tip of tub dissolves 5. Grain moves out of tube into

ovule 6. Grain fertilises ovum (egg)

Summary What we learnt from this project is:• Flower need help from insects to pollinate and fertilise.• Flowers are colorful, smell nice and have nectar to attract and reward insects for their hard work• Other plant use the wind to pollinate and fertilise.• Little grains loosely attached outside of the plant so wind can easily blow them away• The grain fertilises the egg by growing a tube that digests a path to the ovum (egg)

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