Unit A Section 2: Reproduction
Completion requirements
Unit A Section 2: Reproduction
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Learning Targets |
Big Question: What are the differences in the reproduction of sea sponges, daisies and humans?
A species will never be successful if it does not have an effective method of reproduction.
A species will never be successful if it does not have an effective method of reproduction.
In Grades 7 and 8, you learned about the pollination of plants. You studied the male and female parts of plants and became aware of how plants pollinated to reproduce into new flowering plants (angiosperms) or cone-bearing plants (gymnosperms).
Plants can reproduce without seeds. This process is called vegetative reproduction and is used widely to generate more plants. Various methods of vegetative reproduction may involve runners, rhizomes, bulbs, tubers, suckers, or cuttings. In the next lessons, the focus is on how plants can reproduce in more than one way.
Plants can reproduce without seeds. This process is called vegetative reproduction and is used widely to generate more plants. Various methods of vegetative reproduction may involve runners, rhizomes, bulbs, tubers, suckers, or cuttings. In the next lessons, the focus is on how plants can reproduce in more than one way.
Furthermore, your previous lessons involving single-celled versus multi-celled organisms will help you understand the complexity of sexual reproduction or the simplicity of asexual reproductive processes.
Interactive
Pollination is possibly the most important biological process on Earth. Without the pollination of sexually reproducing plants there would not be producers at the beginning of most of the planet's food chains.
Review pollination with the BrainPOP video "Pollination".
Review pollination with the BrainPOP video "Pollination".
You will need a username and password to access the video. After you have watched the video, try some of the other activities on this page.
- Username: 0099
- Password: students
Watch
Watch the video "Flower pollination" for a review of sexual reproduction in flowering plants.
The video "Plant Reproduction: Asexual Reproduction" reviews asexual reproduction in plants.
Do you remember the difference between unicellular and multicellular organisms? The video "Unicellular and Multicellular" will refresh your memory.
What do flowers and cells have to do with reproduction? How is this relevant when we think about the possibilities of producing a purple
cow?
Inquiry Questions
2.6: Is there more than one type of asexual reproduction ?2.7: Sexual Reproduction; what's it all about ?
2.8: Why are some people tall and others short?
2.9: What about plants? How do they reproduce?
2.10: What are the advantages and disadvantages of asexual and sexual reproduction?
Section 2 Checklist
Read pages 26 to 36 in Science in Action 9Asexual Reproduction Try It! Practice Worksheet
Fertilization Try It! Practice Worksheet
Traits Try It! Practice Worksheet
Asexual vs Sexual Reproduction Try It! Practice Worksheet
Self-Checks 6, 7, and 9
Summative Assessment: Section 2 Quiz
Materials
Addison Wesley Science in Action 9
