What is life like for a typical plant?

1. What is life like for a typical plant? Edward Tsui, Au Yueng Hon, William Yuen, Ivan Ho

3. Do plant have babies? • NO! • Breed next generation by two process • Fertilization and Pollination

4. Introduction Flower: • Obtained both male cell and female cell • Located in Stamen and Carpel respectively Pollination: • Usually take place before fertilization • Process of pollen transfer from an anther to a stigma • Only works when both of the plant is the same species

5. Introduction Fertilization: • Usually take place after pollination • Process of male gamete fuse with female gamete • The process of producing seed

6. Pollination - Beginning Sending out pollen • Involved stamen, male part, of flower • Anther: • Male part of flower • Create pollen • Pollen grain ready to be carry away on them • Reproduce purpose Anther Stamen Filament

7. Pollination - Process • Insect- pollinated flowers, e.g. Okra, Celery • Pollen spread by insect • Good insect helper : Bee, Butterfly, Rousettus • Pollen enter other flower while bee collect nectar from other flower • Pollen is stick on to the insect while they collect nectar • Nectar grew deep in the flower to allow pollen to be stick • Carry pollen to another flower

8. Pollination - Process • Wind- pollinated flowers, e.g. Dandelion • Pollen spread by wind • Special feature: Anther usually stick out to facilitated the process • Pollen landed on the plant while the wind blow pass it • Carry pollen away to another plant • Kind of wind-pollinated plant • Wind bring away the pollen

9. Different kind of pollination : Way of Pollen transferred • Self-pollination: • Pollen grains are transferred to the stigma of same flower or plant • Cross-pollination: • Pollen grains are transferred to the stigma of a different plant

10. Fertilization– Result Stigma Pollen enter new flower • Involved female part, carpel • Stigma: • Sticky • Receive pollen • Style: • Transport pollen to the ovary • Pollen started to grow, carrying male gamete • Ovary and ovules: • Fuse with pollen, female gamete • Act similar with human Style Ovary and ovules

11. Fertilization- Result After fertilization, • Plant usually die quickly afterwards • Ovule developed seed of its species • Ovary developed into fruit

12. The seed developed will grow again after the plant die and the species of flower was continued.The cycle of pollination and fertilization then repeat.

13. Conclusion Do plant have babies? • No! • Reproduce themselves in other way • Pollination and Fertilization • Fusing the male and female gamete together to create seed for reproduction

14. Do Plants Breathe? Edward Tsui

15. Do plants breathe? • No. Instead they absorb air. • Do not have a bloodstream or lung • In a passive way instead of an active process

16. The Process (At Day time) • Plants breathe in gas from the air. Most importantly Carbon Dioxide and Oxygen • Releases excessive Oxygen from Photosynthesis

17. The Process (At Night time) • Plants actually breathe in Oxygen (and Carbon Dioxide) and breathes out Carbon Dioxide • Oxygen were used breaking down that sugar to get energy for growth and combining other elements, minerals, and chemicals.

19. How? • Absorbs air through the openings on the underside and upper side of leaves, called Stomata (or air-holes) • Gas moves in to the plant

20. Why? • Plants needs Carbon Dioxide/Oxygen gas to complete photosynthesis • Photosynthesis is to keep the plant alive • Produces glucose and water