PLANTS
PLANT REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mosses use both spores and seeds in their life cycle. Gymnosperms use only seed in their life cycle.
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Mosses produce spores in one stage of their life cycle and sex cells in the other. Gymnosperms produce seeds found on cones.
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Mosses use pollen in their life cycle to fertilize their eggs. Gymnosperms used spores in their life cycle to fertilize their eggs.
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Mosses use only mitosis throughout their life cycle. Gymnosperms use only meiosis throughout their life cycle.
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Detailed explanation-1: -How do the life cycles of mosses and gymnosperms differ? Mosses are nonvascular plants, while gymnosperms are vascular plants. Mosses have a dominant gametophyte phase in their life cycle, but the gymnosperms have a dominant seed phase.
Detailed explanation-2: -Similar to plants, the moss lifecycle is completed in two distinct stages-the gametophyte and the sporophyte. The term that describes this type of life history is called alternation of heteromorphic generations. In vascular plants the dominant stage of this lifecycle is the diploid generation.
Detailed explanation-3: -The male and female gametes (eggs and sperm) are produced on the gametophyte (in special structures called antheridia and archegonia, respectively) and a fertilized egg will develop into a sporophyte. Thus the spores are part of the sexual reproduction cycle.
Detailed explanation-4: -Both mosses and ferns exhibit generational alternation. However, the haploid gametophyte generation is the primary phase of the life cycle of mosses, whereas the diploid sporophyte generation is the dominant phase of the life cycle of ferns. Therefore this is another important difference between mosses and ferns.