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Questions and Answers
Why might a farmer choose vegetative propagation over sexual reproduction for their crops?
Why might a farmer choose vegetative propagation over sexual reproduction for their crops?
Vegetative propagation allows for faster growth, maintains desired traits without variation, and is useful for plants that don't produce viable seeds.
A plant breeder is trying to develop a new variety of rose with a unique fragrance. Would asexual or sexual reproduction be more useful in maintaining that fragrance in future generations? Explain why.
A plant breeder is trying to develop a new variety of rose with a unique fragrance. Would asexual or sexual reproduction be more useful in maintaining that fragrance in future generations? Explain why.
Asexual reproduction is better for maintaining the unique fragrance because it replicates the exact genetic makeup of the parent plant, ensuring the fragrance isn't lost or altered through genetic recombination as it might be in sexual reproduction.
A gardener wants to propagate a prized mango tree but finds that the seeds do not produce trees with the same fruit quality. Which artificial method of vegetative propagation would be most suitable, and why?
A gardener wants to propagate a prized mango tree but finds that the seeds do not produce trees with the same fruit quality. Which artificial method of vegetative propagation would be most suitable, and why?
Grafting would be the most suitable method since it involves attaching a part of the desired mango tree (scion) onto the rootstock of another tree, ensuring the new tree produces fruit identical to the parent tree.
Explain how tissue culture can be advantageous for rapidly producing a large number of disease-free ornamental plants, such as orchids or chrysanthemums.
Explain how tissue culture can be advantageous for rapidly producing a large number of disease-free ornamental plants, such as orchids or chrysanthemums.
What are the primary differences between asexual and sexual reproduction in plants, concerning genetic variation and the involvement of gametes?
What are the primary differences between asexual and sexual reproduction in plants, concerning genetic variation and the involvement of gametes?
Flashcards
Asexual Reproduction
Asexual Reproduction
Reproduction without the fusion of gametes, offspring inherit characteristics from only one parent.
Sexual Reproduction
Sexual Reproduction
Reproduction involving the fusion of male and female gametes, offspring inherit characteristics from both parents.
Advantages of Vegetative Reproduction
Advantages of Vegetative Reproduction
An easier, rapid, and less expensive method, that produces identical copies of parent plants, useful for seedless plants or those that don't produce viable seeds.
Cutting (Vegetative Propagation)
Cutting (Vegetative Propagation)
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Layering (Vegetative Propagation)
Layering (Vegetative Propagation)
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Study Notes
- In asexual reproduction, there is no fusion of gametes
- In sexual reproduction, the fusion of male and female gametes happens
- Processes like gamete formation or fertilization are not seen in asexual reproduction
- Fertilization of gametes gives rise to a zygote in sexual reproduction
- In asexual reproduction, characteristics of only one parent are inherited.
- In sexual reproduction, characteristics of both parents are inherited
- Seeds are not required in asexual reproduction
- Seeds are used to grow new plants from a flower in sexual reproduction
- Vegetative reproduction is an easier, rapid, and less expensive method of reproduction, and plants can be grown in less time.
- Plants produced by vegetative reproduction are identical copies of the parent plant and show no variations.
- Seedless plants can be grown through vegetative reproduction.
- Plants like sugarcane, sweet potato, rose and jasmine do not produce viable seeds, but can be easily grown by vegetative reproduction.
- Cutting is an artificial method of vegetative propagation, for example in rose, sugarcane
- Layering is an artificial method of vegetative propagation, an example of which is jasmine
- Grafting is an artificial method of vegetative propagation, for example in mango
- Tissue culture is an artificial method of vegetative propagation, for example in Orchids, Chrysanthemum
- Diagrams on interleaf: Figures- 8.5,8.6, 8.7,8.8
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Description
Asexual reproduction involves no fusion of gametes, inheriting traits from a single parent. Sexual reproduction involves the fusion of gametes, inheriting traits from both parents. Vegetative reproduction is a rapid method for growing seedless plants like sugarcane and rose.
