Page 144 - Science Course 1 (Book 1)

Mo4-L6b: How do Seedless and Seed Plants Reproduce?

Ovule
Mo4-L6b How do Seedless and Seed
Plants Reproduce? female reproductive structure of a seed plant where
the haploid egg develops.
KEY CONCEPTS:
1. How do seedless plants such as mosses and
ferns reproduce?
2. How do seed plants reproduce?

Vocabulary A-Z

Let us learn some vocabulary OVULE

Embryo Seed
an immature a plant embryo, its
Pollen Grain diploid plant that food supply, and a
spore that forms from develops from protective covering.
the zygote.
tissue in a male reproductive
structure of a seed plant.

Vacoule
Exine Tube Cell

Intine Tube Nucleus

Generative Cell
Germ Pore

Meosis I Meosis II

Let’s Begin

Pollen mother Tetrad of four Reproduction in Seedless Plants
cell(diploid) haploid pollen
cell
Seedless plants grow from haploid spores, not from
Separate seeds.
pollen grains Secretion
of walls Mosses grow by mitosis and cell division from
Pollination haploid spores produced by the diploid generation.
the process that occurs when pollen grains land on a Ferns produce haploid spores that grow into tiny
female reproductive structure of a plant that is the plants which produce eggs and sperm that can unite
same species as the pollen grains. and form the diploid generation.

Meiosis

Haploid gametophyte
(2n)
Diploid sporophyte
(n)

Fertilization

137