Class 8 Science | Germination of Seed

Science and Technology, Class 8

Germination of Seed

From seed to plant · Water, air, warmth, light · Dormancy to seedling

What We Learn Today

🌱

What germination of a seed is

😴

Dormancy and germination capacity

💧

The four factors that affect germination

🌾

Why germination matters

Inside the seed

How Germination Happens

SOAK

The seed takes in water, swells and its coat splits.

WAKE

Biochemical reactions make the radicle and plumule cells active.

ROOT

The root system grows down from the radicle.

SHOOT

The shoot system comes up from the plumule.

SEEDLING

A seedling forms and grows into a new plant.

The notes are free to read in full.

Presenter notes: Ask the class what happens to soaked black gram left at home for two days. That change is exactly today's lesson.