1. In plants, sexual reproduction occurs when sperm and egg unite to form a...

a. gamete
b. gametophyte
c. sporophyte
d. zygote

Is it d?

2. A plant continues to grow throughout its life through the use of s a process called...

a. alternation of generations
b. photosynthesis
c. dormancy
d. germination

Is it b?

3. Which is one advantage of sexual reproduction?

a. More offspring are produced.
b. More offspring survive to maturity
c. The offspring have more genetic variation.
d. The offspring and the parents are identical.

Is it c?

4. Which is one advantage of external fertilization?

a. The offspring are genetically identical to the parents.
b. More eggs can be fertilized at one time.
c. More sperm can be released at one time.
d. More protection is available for developing zygotes.

Could it be either b or c? Or none...

Thanks anyone who comments on this! You're the best!

1. d

2. b
3. c
4. b

1. The correct answer is d. A zygote is formed when sperm and egg unite in plant sexual reproduction. To arrive at this answer, you can go through the process of elimination:

- A gamete refers to the sperm or egg cell itself, so it is not the correct answer.
- A gametophyte is the haploid phase in the life cycle of plants, producing gametes. It is not the correct answer here.
- A sporophyte is the diploid phase in the life cycle of plants, producing spores. It is also not the correct answer.

2. The correct answer is a. Plants continue to grow throughout their lives through a process called alternation of generations. This involves alternating between a multicellular haploid gametophyte generation and a multicellular diploid sporophyte generation. Again, you can use the process of elimination to arrive at the correct answer.

- Photosynthesis is the process by which plants convert sunlight, water, and carbon dioxide into food. While it contributes to plant growth, it is not the specific process mentioned in the question.
- Dormancy refers to a state of reduced metabolic activity in plants, often during unfavorable environmental conditions. It is not the correct answer.
- Germination is the process by which a plant embryo begins to grow and develop. While it is part of a plant's life cycle, it does not directly answer the question.

3. The correct answer is c. One advantage of sexual reproduction is that it results in offspring with more genetic variation. To determine the correct answer, you need to consider the advantages of the other options:

- While sexual reproduction can result in more offspring being produced compared to asexual reproduction, it is not the correct answer since the question specifically asks for advantages.
- While more offspring may survive to maturity with sexual reproduction due to genetic variation and potential adaptation to changing environments, it is not the most accurate answer here.
- Offspring being genetically identical to the parents is a characteristic of asexual reproduction, not sexual reproduction.

4. The correct answer is b. One advantage of external fertilization is that more eggs can be fertilized at one time. Let's assess the other options:

- The offspring being genetically identical to the parents is a characteristic of asexual reproduction, not external fertilization.
- While more sperm can be released at one time during external fertilization, the question specifically focuses on the advantage, and the number of eggs being fertilized is more relevant.
- More protection for developing zygotes is typically associated with internal fertilization rather than external fertilization.

I hope this clarifies the answers for you! If you have any further questions, feel free to ask.

1. The correct answer is d. zygote. When sperm and egg unite in plants, they form a zygote, which is the first stage of a new sporophyte individual.

2. The correct answer is a. alternation of generations. In plants, the process of alternation of generations allows for continuous growth throughout their life cycle. This involves the alternating phases of the haploid gametophyte generation and the diploid sporophyte generation.

3. The correct answer is c. The advantage of sexual reproduction is that it results in offspring with more genetic variation. This genetic variation aids in the adaptation and survival of species by providing them with the potential for advantageous traits and the ability to respond to changes in their environment.

4. The correct answer is b. One advantage of external fertilization is that more eggs can be fertilized at one time. External fertilization, which occurs typically in aquatic organisms, allows for the release of large numbers of eggs and sperm into the environment simultaneously. This increases the chances of successful fertilization, leading to a higher number of offspring.