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28.1 Reproductive strategies
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- Flowering plants have a life cycle in which two generations alternate. The plant that bears flowers is the sporophyte.
- Flowering plants are heterosporous; the sporophyte produces microspores and megaspores.
- Adaptation to a land environment includes a sperm-bearing mature pollen grain (male gametophyte), and an egg-bearing female gametophyte retained within the body of the sporophyte.
| - What are the functions of flowers?
Answer - What is the difference between monoecious and dioecious plants?
Answer - What is one adaptation which promotes cross pollination?
Answer
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Essential Study Partner
Summaries of major points- A life cycle....
- The sporophyte
- The gametophytes
- Pollination and fertilization
Art Review
Art Quizzes
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28.2 Seed development
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- The eudicot embryo goes through a series of stages; once the cotyledons appear, it is possible to distinguish the shoot apical meristem and the root apical meristem.
- A seed has a seed coat, an embryo, and stored food.
| - What tissue do the outermost cells of a plant embryo become and what is its function?
Answer - What are the parts of a mature embryo and what does each become?
Answer
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Essential Study Partner
Summaries of major points- Stages in development of eudicot embryo
- Embryonic development
Art Review
- Development of an eudicot embryo
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28.3 Fruits
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- In flowering plants, seeds are enclosed by fruits, which develop from the ovary and possibly other parts of a flower.
- Fruits aid the dispersal of seeds.
| - What is the botanical definition of a fruit?
Answer - Fruits which develop from single carpels are called _______________ fruits and those which develop from more than one individual ovaries are called _______________ fruits.
Answer - From what flower structure is the majority of tissue in an accessory fruit derived from?
Answer - What are the environmental conditions required for seeds to germinate?
Answer
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Essential Study Partner
Summaries of major points- Seeds and fruits
- Types of fruits
- Seed dispersal
- Seed germination
Labeling Exercises
Art Review
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28.4 Asexual reproduction
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- Many flowering plants have an asexual means of propagation (i.e., from nodes of stems or from roots).
- Many plants can be regenerated in tissue culture from meristem tissue and from individual cells. This has contributed to the genetic engineering of plants.
| - What does it mean that plant cells are totipotent?
Answer - What is a transgenic plant?
Answer
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Essential Study Partner
Summaries of major points- Means of asexual propagation
- Tissue culture of plants
- Genetic engineering of plants
Art Review
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