Investigating Seed Germination. Hypothesis If there is water, oxygen and a suitable temperature in the surroundings, then the seed will germinate.

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SSIS MYP Programme

Science Investigation Report

Investigating Seed Germination

Name: Kimberly Hoong Yearn Yi

Class: S4 Ruby

Aim

To investigate how the following conditions: presence of water, presence of oxygen, and the temperature would affect the germination of a seed.

Hypothesis

If there is water, oxygen and a suitable temperature in the surroundings, then the seed will germinate.

A seed is an embryonic plant in a resting condition after the development of the embryo in the ovule of the plant stops. Water is then lost and the seed enters a state of dormancy, where its metabolic activities are suspended until germination takes place. In order for germination to occur, water, oxygen and a suitable temperature must be present.

Water must be present, because it is what sets off the metabolic activity inside the seed. Water is taken up by a process called imbibition and is needed for the metabolism of the seed as well as for breaking the seed coat by making the seed swell. With water and all other conditions (oxygen, suitable temperature) present, germination commences with the uptake of water by imbibition of the dry seed, followed by embryo