Question

use the information below to answer questions 1 and 2. catherine works in a plant nursery and likes all the brightly colored flowers there. she asks the owner about them and is surprised to learn that all flowers have two stages in their life cycle. write the letters of the correct answers on the lines at left. 1. what are the two stages plants go through during their life cycle? choose the two that apply. a. sporophyte b. fertilization c. zygote d. gametophyte 2. what is the ripened ovary of an angiosperm called? a. pollen b. sepal c. stamen d. fruit 3. brady took a cutting from a sweet potato vine in his family garden and placed the vine in a small vase filled with water. after about a week, tiny roots had begun to grow. what is this an example of? a. sexual reproduction b. asexual reproduction c. fertilization d. vascular reproduction circle the words or phrases that correctly complete the sentence. 4. caroline and her family often visit northern new mexico during their summer vacation, and she likes observing the pine cones that fall from the ponderosa pines. she learns that gymnosperms have adaptations that help them reproduce. the female cone has a sticky substance on the outside and a(n) (fruit / ovule / scale / seed) inside it, while the male cones have (sticky / lightweight / wet / deeply rooted) pollen that can blow.

Explanation:

1. In the plant life - cycle, the two main stages are the sporophyte and gametophyte stages. Fertilization is a process and zygote is a product of fertilization, not life - cycle stages.
2. The ripened ovary of an angiosperm is called a fruit. Pollen is male gamete, sepal is part of flower structure, and stamen is male reproductive part of flower.
3. Taking a cutting and growing roots from it is a form of asexual reproduction as it does not involve gamete fusion.
4. In gymnosperms, the female cone has an ovule inside it and the male cones have lightweight pollen that can be blown by wind for reproduction.

Answer:

1. A. sporophyte, D. gametophyte
2. D. fruit
3. B. asexual reproduction
4. ovule, lightweight