AP BIOLOGY

PLANTS

PLANT REPRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Mosses and ____ are seedless plants that show an alternation of generation.
A
pines
B
firs
C
blackberries
D
ferns
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -bioweb. The life cycle of the fern has two different stages; sporophyte, which releases spores, and gametophyte, which releases gametes. Gametophyte plants are haploid, sporophyte plants diploid. This type of life cycle is called alternation of generations.

Detailed explanation-3: -Modern-day seedless vascular plants include club mosses, horsetails, ferns, and whisk ferns.

Detailed explanation-4: -The life cycle of seedless vascular plants is an alternation of generations, where the diploid sporophyte alternates with the haploid gametophyte phase. The diploid sporophyte is the dominant phase of the life cycle, while the gametophyte is an inconspicuous, but still-independent, organism.

Detailed explanation-5: -Primitive seedless plants, like ferns, mosses and liverworts, reproduce with spores. Spores, like seeds, are ultimately the result of sexual reproduction. Unlike seeds, spores are usually a single reproductive cell.

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