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Questions and Answers
What type of reproduction do African violets primarily use to create new plants?
What type of reproduction do African violets primarily use to create new plants?
- Sexual reproduction through seeds
- Spontaneous generation from soil
- Hybridization with other plants
- Asexual reproduction through cuttings (correct)
Under what conditions can duckweed produce daughter fronds?
Under what conditions can duckweed produce daughter fronds?
- In the presence of predators
- Only in freshwater lakes
- Under suitable environmental conditions (correct)
- In complete darkness
What structure of duckweed peels off to become a new plant?
What structure of duckweed peels off to become a new plant?
- Daughter roots
- Pixie leaves
- Stem nodes
- Parent frond (correct)
How does the genetic material of duckweed offspring compare to that of the parent plant?
How does the genetic material of duckweed offspring compare to that of the parent plant?
What is the function of meristematic cells in plants?
What is the function of meristematic cells in plants?
What might limit the growth of duckweed in an aquatic environment?
What might limit the growth of duckweed in an aquatic environment?
What characteristic do daughter fronds of duckweed share with their parent?
What characteristic do daughter fronds of duckweed share with their parent?
Which of the following best describes the structure of duckweed?
Which of the following best describes the structure of duckweed?
What method of asexual reproduction do strawberries utilize?
What method of asexual reproduction do strawberries utilize?
What is a disadvantage of developing and selling plants only from their roots?
What is a disadvantage of developing and selling plants only from their roots?
Which of the following statements best describes the genetic composition of offspring produced asexually?
Which of the following statements best describes the genetic composition of offspring produced asexually?
Which environmental factor is most likely to impede the survival of spore-bearing plants?
Which environmental factor is most likely to impede the survival of spore-bearing plants?
How do mosses reproduce during the alternation of generations?
How do mosses reproduce during the alternation of generations?
What is a characteristic of asexual reproduction in the context of plant variation?
What is a characteristic of asexual reproduction in the context of plant variation?
Which part of the underground structure in plants like asparagus allows it to regrow each spring?
Which part of the underground structure in plants like asparagus allows it to regrow each spring?
What role does moisture play for plants like mosses and ferns?
What role does moisture play for plants like mosses and ferns?
What characteristic is beneficially produced during bacterial conjugation?
What characteristic is beneficially produced during bacterial conjugation?
Which statement is true about the process of bacterial conjugation?
Which statement is true about the process of bacterial conjugation?
What type of reproduction do angiosperms rely on to reproduce?
What type of reproduction do angiosperms rely on to reproduce?
In what way does bacterial conjugation differ from sexual reproduction?
In what way does bacterial conjugation differ from sexual reproduction?
Which of the following best describes antibiotic resistance in bacteria?
Which of the following best describes antibiotic resistance in bacteria?
Which factor contributes to the success of angiosperms compared to other plant types?
Which factor contributes to the success of angiosperms compared to other plant types?
What does binary fission refer to in the context of bacterial reproduction?
What does binary fission refer to in the context of bacterial reproduction?
How do ferns and mosses primarily reproduce?
How do ferns and mosses primarily reproduce?
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Study Notes
Reproduction in Plants
- Plants can reproduce asexually by growing new shoots from underground stems, forming runners, or producing suckers from roots
- Plants can reproduce sexually by forming seeds
- Spore-bearing plants are the most numerous plant species on Earth
- Ferns and mosses reproduce by forming spores
- Angiosperms reproduce sexually by forming seeds
- Angiosperms are flowering plants and make up over half of all known plant species
- Meristematic cells are specialized cells in plants that allow for repair and asexual reproduction
Asexual Reproduction in Plants
- Western wood lily (Lilium philadelphicum) reproduces asexually
- Spider plants reproduce asexually through runners
- Strawberries reproduce asexually through runners
- Lilacs reproduce asexually through suckers
- Asparagus reproduces asexually from roots
- Growers may sell only the roots of asparagus plants
Bacterial Conjugation
- Bacteria can transfer genetic material directly from one cell to another through bacterial conjugation
- Bacterial conjugation is a primitive form of sexual reproduction
- Conjugation results in genetic recombination but not reproduction because it does not involve the production of new cells
- New cells are produced through binary fission after conjugation
Types of Plants
- There are approximately 35,000 species of spore-bearing plants, 700 species of gymnosperms, and 200,000 species of angiosperms living on Earth
Factors Affecting Plant Survival
- Spore-bearing plants require moisture for reproduction
- Climate change can affect plant survival by altering conditions needed for reproduction
Asexual Reproduction in Duckweed
- Duckweed is a small aquatic plant that reproduces asexually
- Duckweed produces two or three daughter fronds from each parent plant
- A new duckweed plant can form within 24 hours under suitable conditions
- Daughter fronds detach from the parent frond as they grow larger
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