Fertilization in plants - Mr. Santizo€¦ · PROCESS OF FERTILIZATION 1. Pollen falls on the...
Transcript of Fertilization in plants - Mr. Santizo€¦ · PROCESS OF FERTILIZATION 1. Pollen falls on the...
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FERTILIZATION IN PLANTS
Mr. Erick Santizo
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VIDEO INTRO
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LET US EXPLORE
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WHAT IS FERTILIZATION?
When the sperm nucleus joins with the egg
nucleus.
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PROCESS OF FERTILIZATION
1. Pollen falls on the stigma
2. Pollen germinates and pollen tube carries
male gametes to the ovule
3. In the ovule, one sperm fuses with egg
nucleus and form zygote. (fertilization)
4. The other sperm fuses with polar nuclei
forming endosperm ( provides food for embryo)
5. Zygote divides and forms embryo
6.Finally seed is formed.
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ARRANGE THE PROCESS IN ORDER
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WHAT IS THE OUTCOME OF FERTILIZATION?
Fruits
There are Two types of fruits
Fleshy fruits: Eaten and dispersed by animals.
Soft and juicy flesh. Example: mangoes,
tomatoes
Dry fruits: stiff and dry flesh. Dispersed by wind
or water. Example: ochro, peas
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FLESHY OR DRY
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FLESHY OR DRY?
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FLESHY OR DRY
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FLESHY OR DRY
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FLESHY OR DRY
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WRITE THE PROCESS IN SEQUENCE