1. Some flatworms reproduce through fragmentation. What is a disadvantage of this method? (1 point)
a. It is a much more complex process than sexual reproduction.
b. It is a process that leads to lower genetic diversity than sexual reproduction.
c. It is a process that does not result in many offspring relative to sexual reproduction.
d. It is a very slow process relative to sexual reproduction.
2. The process by which a modified stem or root of a parent plant grows offspring that remain attached is called (1 point)
a. vegetative reproduction.
b. binary fission.
c. tuber reproduction.
d. fragmentation.
3. Select the statement that is true. (1 point)
a. Sexual reproduction produces more offspring than asexual reproduction.
b. Asexual reproduction occurs when two gametes fuse.
c. Sexual reproduction requires a single parent.
d. Asexual reproduction is a simpler process than sexual reproduction.
4. Many plants can reproduce both sexually and asexually. Which statement below best describes why one method might be more beneficial than the other? (1 point)
a. Sexual reproduction guarantees that two plants will provide nourishment for new plantlets.
b. Asexual reproduction allows plants to skip the process of finding a mate.
c. Sexual reproduction provides genetic variation to plants to help them survive in a changing environment.
d. Asexual reproduction allows plants to avoid having to care for their offspring.
1. b. It is a process that leads to lower genetic diversity than sexual reproduction.
2. a. vegetative reproduction.
3. d. Asexual reproduction is a simpler process than sexual reproduction.
4. c. Sexual reproduction provides genetic variation to plants to help them survive in a changing environment.
1. The correct answer is b. It is a process that leads to lower genetic diversity than sexual reproduction.
2. The correct answer is a. Vegetative reproduction.
3. The correct answer is d. Asexual reproduction is a simpler process than sexual reproduction.
4. The correct answer is c. Sexual reproduction provides genetic variation to plants to help them survive in a changing environment.
1. The correct answer to this question is b. It is a process that leads to lower genetic diversity than sexual reproduction.
To determine this, we need to understand the disadvantages of fragmentation as a method of reproduction.
Fragmentation is a form of asexual reproduction in which an organism breaks apart into two or more fragments, with each fragment capable of developing into a new organism. While fragmentation allows for rapid reproduction and increases the population size, there are disadvantages to this method.
One major disadvantage is the lower genetic diversity compared to sexual reproduction. When organisms reproduce sexually, the genetic material from two parents is combined, resulting in offspring that inherit a mix of genetic traits. This increased genetic diversity helps populations adapt and survive in changing environments. In fragmentation, however, the new organisms are essentially clones of the parent, resulting in limited genetic variation.
2. The correct answer to this question is a. vegetative reproduction.
To determine this, we need to understand the different methods of reproduction in plants.
Vegetative reproduction is a process in which a modified stem or root of a parent plant grows offspring that remain attached. This allows the parent plant to produce genetically identical clones, which are essentially exact replicas of itself.
Binary fission is a method of reproduction common in single-celled organisms where the parent cell divides into two identical daughter cells.
Tuber reproduction involves the formation of modified underground stems called tubers that act as storage organs and can develop into new plants.
Fragmentation, as discussed earlier, is a form of asexual reproduction in which an organism breaks apart into fragments capable of developing into new organisms.
3. The correct answer to this question is d. Asexual reproduction is a simpler process than sexual reproduction.
To determine this, we need to compare the characteristics of sexual and asexual reproduction.
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes (reproductive cells). Instead, offspring are produced from a single parent, and they are genetically identical or clones of the parent organism. This process typically requires less time, energy, and resources compared to sexual reproduction, making it a simpler process.
Sexual reproduction, on the other hand, involves the fusion of gametes from two parents, resulting in offspring with a combination of genetic traits. This process requires more complex mechanisms, such as the production of specialized reproductive cells, mating, and fertilization.
4. The correct answer to this question is c. Sexual reproduction provides genetic variation to plants to help them survive in a changing environment.
To determine this, we need to understand the benefits of sexual and asexual reproduction in plants.
Sexual reproduction allows for the mixing of genetic material from two parent plants, resulting in offspring with genetic variation. This genetic diversity increases the chances of survival and adaptation to changing environmental conditions. It provides an advantage by allowing plants to adapt and evolve to new challenges they may face.
Asexual reproduction, in contrast, produces offspring that are genetically identical or clones of the parent plant. While asexual reproduction allows for rapid and efficient reproduction, it does not introduce new genetic variation. This lack of genetic diversity may limit the ability of a population to adapt and respond to environmental changes.
Therefore, it can be concluded that sexual reproduction is more beneficial for plants in terms of genetic variation and adaptation to changing environments.