Growing Plants Notes

INTRODUCTION

‘He who plants a tree, plants the green Earth’.

•      Plants are living things which are very useful to us.

•      They need air, water, soil, and sunlight to live.

•      They cannot move from place to place, but their leaves show movement to capture light from the sun and their roots show movement towards the ground.

•      Their seeds can be carried by animals or blown by the wind. 

•      Plants can grow from different parts of the plant like seeds, stems, roots and leaves.

GROWING PLANTS FROM SEEDS

•      All seeds cannot grow into new plants.

•      Some seeds are eaten up by birds and insects.

•      Some seeds get destroyed by rain or wind.

•      Some seeds do not get sufficient air, water, or warmth to grow.

•      If the seed survives and gets the right amount of water, air, and warmth (from the sun), it will produce a baby plant or seedling.

Germination:

•      The process in which a plant emerges from a seed and begins growth is called germination.

DISPERSAL

•      Many plants scatter their seeds in order to ensure that they do not grow too close to one another.

•      The process by which the seeds are scattered away from the mother plant is called dispersal.

•      Nature has its own way of dispersal of seeds.

The ways by which dispersal of Seeds take Place:

A.    Dispersal by wind:

•      Seeds of certain plants are very light and have wings or hair on them.

•      These seeds are easily carried away by wind.