What does gymnosperm mean? What group of gymnosperm plants is the largest? What

Question

What does gymnosperm mean? What group of gymnosperm plants is the largest? What type of spore is used for male reproduction in seed plants? Through mitosis, the male spore develops into what structure? What type of spore is used for female reproduction in seed plants? Through mitosis, the female spore develops into what structure? What does angiosperm mean? What structures of the flower are female? What structures of the flower are male? What is the function of the petals of the flower? The process of Answer occurs in the flower anther to create haploid Answer followed by mitosis to create The process of Answer occurs in the flower ovary to create the haploid Answer followed by mitosis to create the Answer and the n + n State one difference between monocots and eudicots. Explain how angiosperms undergo a double fertilization. What part of the flower develops into a fruit? How is a simple fruit different from a complex fruit? Give an example of a fleshy fruit: Give an example of a dry fruit:

Explanation / Answer

1. The plants which produces seeds are called gymnosperms. It is derived from a Greek word gymnospermos which means naked seed.

2. It is divided into 4 groups : conifers, cycads, ginko and pnetophytes. Among these conifers is the largest.

3. Two types of spores are produced in gymnosperms namely microspore and megaspore. Microspores are produced from male cone.

4.On mitosis, the microspore develop into generative nucleus and tube nucleus.

5. Megaspores are used in female reproduction.

6. On mitosis, one nuclei is divided 3 times to produce 8 nuclei. Among these 2 nuclei fuse to give polar nucleus. Other nuclei fuse to form 2 egg apparatus (3 nuclei each)

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