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Kairi Ch 1 Scie Gr 4
| Question | Answer |
|---|---|
| Plants are classified into 2 groups according to the way they reproduce. They are ..... | Flowering and non flowering plant |
| Part of the plants that is used to reproduce is ...... | Flower |
| Male reproductive parts of the plant are called .... | stamen |
| Female reproductive parts of the plant are called .... | carpel |
| stamen consists of ..... | filament and anther |
| carpel consists of ...... | stigma, style, ovary, ovule |
| Part of the flower that has bright color to attract insect for pollination is ...... | petal |
| Mention the function of stigma. | to receive pollen grains during pollination |
| Mention the function of petal. | to attract insect that will be helpful in pollination |
| Mention the function of anther. | to produce pollen grains |
| Mention the function of ovary. | it protects the ovules that is essential for fertilization. |
| What is pollination? | The process by which the pollen grains fall on the stigma. |
| What is fertilization? | The process where the pollen grains go through pollen tube, and then go to ovary to meet ovule. |
| What is germination? | The process where the seed develops into seedlings. |
| Mention the life cycle of a plant. | seed, seedling, young plant, adult plant. |
| What is seed dispersal? | seed dispersal is the spread of seeds away from the parent plant. |
| Why do plants need seeds dispersal? | so the young plants don't need to compete over nutrition, space with their parent plant. Or because if there are too many plants in one place, the plants won't grow well. |
| Mention 4 ways of seeds dispersal. | by wind, animals/human, water, fruit explosion |
| Examples of seeds dispersal by wind are ........ | dandelions, mapple, cattails |
| Examples of seeds dispersal by explosion are ........ | lady finger, peas |
| Examples of seeds dispersal by animals/human are ........ | blueberries, mango |
| Examples of seeds dispersal by water are ........ | water lilly, coconut |
| Explain the process of germination | Seed absorbs water, the root grows, the stem grows, and the leaf grows. |
| Mention 3 conditions for the seeds to germinate. | the presence of water, air and right temperature. |
| Alex and Bruce have done an experiment. Alex puts his seed in a pot, waters it everyday and put it by the window. Bruce puts his seed in a pot, waters it everyday and put it in the fridge. After 7 days, Bruce's seed does not grow, explain why. | Because the seed did not get the right temperature. |
| After fertilization, the ovary will develop into ....... meanwhile the ovule will develop into ....... | ovary --> fruit ovule --> seed |
Created by:
niluhyuli
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