Conditions for Germination

A seed grown into a 

Most of the seeds germinate under dark conditions.

A scientist wanted to study what kind of soil helps seeds to grow well. She placed the seeds in three pots containing sand, clay and loam.
 

What else would the seeds need to germinate?
The scientist watered the plants and kept all of them in the same warm place. The picture shown you what she saw about ten days later. In which soil did the seedlings grow best?
If pot C had been kept in the shade, would the plants have grown as well?

If she had not watered one of the pots, would this experiment have been a fair way of comparing the three kinds of soil? Why?

Junaid's class germinated seeds under different conditions. These are their results.

What type of graph should Junaid draw and why?

Junaid's class germinated seeds under different conditions. These are their results.

Do seeds need light for germination? Use the result to explain your answer.

Junaid's class germinated seeds under different conditions. These are their results.

Which condition is best for germination?

What do you understand by germination of seed? How can you show that oxygen, water and temperature are necessary for seed germination?

Some green grams are soaked in water for three hours, then the water is strained and stored in a wet cloth. What happens to the green gram next day? What can be observed?        

Sunlight is not essential for seed germination.

Only seeds that reach the soil will sprout.

The seed of lady's finger, if sown too deep, will not sprout.

Classify the following factors into those that are required and those that are not required for the sprouting of seeds:

• Air
• Favourable temperature
• Water
• Manure
• Sunlight
• Soil

Is sunlight necessary for the germination of seeds?

Is water required for the germination of seeds?

Is soil required for the germination of seeds?

Explain the role of darkness in the germination of seed.

A photoblastic seed is given following treatment. In which case germination of seeds will be maximum ?
($\mathrm{R}=\mathrm{red}$ light of $660 \mathrm{m}\mu$ and $\mathrm{Fr}=$ far red light of $730 \mathrm{m}\mu$)

A seed has kept for a long time. Which of these is necessary for it to start germinating?

Gargi planted some seeds in a soil filled pot. She forgot to water the seeds. Do you think the seeds will grow into a plant? 
 

Choose the correct option.
STATEMENT $1$: The process by which a seed develops into a young plant is called pollination.
STATEMENT $2$: The process by which a seed develops into a young plant is called germination.