Multiple Choice
How many chromosomes are there in human gametes?
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12. Meiosis
Life Cycle of Sexual Reproducers
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Which two statements correctly describe the life cycles of mosses and angiosperms?
A
Mosses have a dominant gametophyte stage, while angiosperms have a dominant sporophyte stage.
B
Angiosperms have a dominant gametophyte stage, while mosses have a dominant sporophyte stage.
C
Both mosses and angiosperms have a dominant gametophyte stage.
D
Both mosses and angiosperms have a dominant sporophyte stage.
Verified step by step guidance1
Understand the basic life cycle of plants, which includes two main stages: the gametophyte stage and the sporophyte stage. The gametophyte stage is haploid, producing gametes, while the sporophyte stage is diploid, producing spores.
Recognize that in mosses, the gametophyte stage is the dominant stage. This means that the gametophyte is the larger, more visible, and longer-lived stage of the life cycle.
Identify that in angiosperms (flowering plants), the sporophyte stage is the dominant stage. The sporophyte is the larger, more visible, and longer-lived stage in these plants.
Compare the life cycles of mosses and angiosperms: Mosses have a dominant gametophyte stage, whereas angiosperms have a dominant sporophyte stage.
Conclude that the correct statements are: 'Mosses have a dominant gametophyte stage, while angiosperms have a dominant sporophyte stage.'
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