Alternation of Generations | Plant Physiology - Biology IB23

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Biology

Physiology

IB Biology (HL)

Plant biology

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Alternation of Generations

A plant cycle of life cycles:
- Diploid Sporophyte (2N)
- Haploid Gametophyte (1N)

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Diploid Sporophyte

(2N)

Undergoes meiosis to create haploid (1N) spores from diploid (2N) cells.

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Haploid Gametophyte

(1N)

Male and female gametes are formed and fertilized.

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Moss

Dominant = Haploid Gametophyte

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Fern

Dominant = Diploid Sporophyte