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A Handbook of Biology

Gametophyte

(n)

Gametogenesis

Spores

(n)

HAPLONTIC LIFE

CYCLE

Meiosis

Syngamy

Zygote

(2n)

DÏPLØÑTÏÇ LÏFË ÇÝÇLË

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Sporophytic generation is dominant; photosynthetic and independent.

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Gametophytic generation is microscopic and represented by single to

few-celled (e.g., Fucus) haploid gametophyte.

Examples: All seed-bearing plants (gymnosperms and angiosperms)

follow this pattern, where the gametophytic phase is few to multicell.

(AIPMT MAINS 2011)

Sporophyte

(2n)

Meiosis

Zygote

(2n)

DIPLONTIC LIFE

CYCLE

Syngamy

Gametophyte/

Gametes (n)

Gametogenesis