2008年3月26日 星期三
Germination
- Uptake of water by imbibition
- Synthesis of Gibberellins
- Synthesis of hydrolytic enzymes
- Break down of insoluble food reserves in endosperm into simple soluble substance
- The simple soluble substance translocated to growing embyro for utilization
Comparison between Sexual Reproduction and Asexual Reproduction
| Asexual Reproduction | Sexual Reporduction |
| -one parent only | -one / two parent(s) |
| -no gamete | -have gamete |
| -no meiosis | -have meiosis |
| -genetically indentical | -genetically different |
| -large offspring is produced | -smaller offspring is produced |
| -fast | -slow |
| -occur commonly in lower organism | -occur commonly in plant and animal |
Requirment for Sexual Reproduction
- Individual reach sexual maturity at the same time, so that both of them can produce gametes.
- Meiosis in life cycleto produce haploid gametes, so that in fertilization, diploid can be restored.
- Transfer of gamete together for fertilization.
- Availability of male and female that are compatible at breeding state.
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