Reproduction in plants

Can be sexual or asexual

• Asexual – budding, bulbs and rhizomes – vegetative growth by mitosis only – no diversity as genes are not swapped between different individuals

Can be sexual or asexual

• Sexual reproduction in plants, just like in animals, involves the fertilization of eggs (female gametes) by sperm (male gametes).

• Two stages in their life cycle to carry out sexual reproduction – Alternation of Generations

Alternation of generation

• A haploid (n) stage – Gametophyte• A diploid stage (2n) – Sporophyte

(Copy drawing from board)

Differences between plant groups

• Mosses, ferns, gymnosperms and angiosperms have key differences in their alternation of generations.

• In some, the gametophyte is dominant; in others the sporophyte is dominant (dominant meaning the stage that the plant is in for most of its life and the stage that is more visible)

Differences between plant groups

• Pg 241 – 242 in your workbook (cut out Algae)

• Moss (bryophytes)• Fern• Gymnosperm (conifers)• Angiosperm (flowering plants)

Mosses (bryophytes)

Ferns

Gymnosperm

Angiosperm