Conditions of Germination

Germination is the ..................... of a seed into a/an ....................

• development .... building

• development .... seedling

• changes .... adult plant

• changes .... mature plant

Germination of seeds only occurs when the conditions are right.

What are these conditions?

• air, water and soil

• air, water and light

• water, oxygen and warmth

• warmth, water and carbon dioxide

Based on the diagram above, which seeds will not germinate?

• A

• B and C

• B, C and D

• All of the above

An experiment has been conducted by Ahmed. He wants to find out the factors of germination.

After 5 days, he observed that seeds in B does not germinate.

Explain why is this so?

• this is because water is present

• this is because water is absent

• this is because the temperature is too cold

• this is because the temperature is too hot

Choose the BEST statement on why water is needed in the germination of seeds.

• water is to soften the seed coat

• water is to soften the seed leaves

• water is needed for the plant to grow

• water is needed by the roots

Sheila wants to investigate whether water is needed for germination. She set-ups an experiment as shown above. She used 5 seeds for each tube and placed both at the room temperature. After 5 days, she noticed that only seeds in tube A germinate.

Based on that, indicate the constant variables in her experiment.

• the presence of water

• the number of seeds

• the temperature

• the number of seeds and the temperature

From the experiment above, it is found that only seeds in A germinated.

Explain, why this is so?

• seeds A have water and warmth.

• seeds A have water, warmth and carbon dioxide.

• seeds A have moist cotton and warm temperature.

• seeds A have water, warmth and oxygen.

From the experiment above, it is found that seeds in B did not germinate.

Explain, why this is so?

• seeds B do not have oxygen

• seeds B do not have water

• seeds B do not have suitable heat

• seeds B do not have oxygen, water and it is cold

From the experiment above, it is found that only seeds in A germinated.

Explain, why seeds in C did not germinate?

• seeds C do not have oxygen

• seeds C do not have carbon dioxide

• seeds C do not have light

• seeds C do not have water

From the experiment above, it is found that only seeds in A germinated.

Explain, why seeds in D did not germinate?

• seeds D do not have oxygen

• seeds D do not have water

• seeds D do not have suitable heat

• seeds D have oil