Factors Affecting Germination

Q.

What is the optimum temperature in celsius for a seed to germinate?

1. ${25}^{\circ }$ to ${35}^{\circ }$

2. ${20}^{\circ }$ to ${25}^{\circ }$

3. ${35}^{\circ }$ to ${45}^{\circ }$

4. ${45}^{\circ }$ to ${47}^{\circ }$

Q.

What is the role of water in metabolic activities?

Q. Plants which have flowers with both male and female reproductive parts are called ______________________.

1. Unisexual
2. Hetrosexual
3. Bisexual
4. Homosexual

Q.

What is the optimum temperature for a seed to germinate?

1. ${35}^{\circ }$ to ${45}^{\circ }$

2. ${20}^{\circ }$ to ${25}^{\circ }$

3. ${45}^{\circ }$ to ${47}^{\circ }$

4. ${25}^{\circ }$ to ${35}^{\circ }$

Q.

A seed obtains water from the environment, swells and consequently the seed coat ruptures allowing the elongating radicle to come out and form the root system.

1. True

2. False

Q.

Temperature below the optimum level (i)________ the growth of the embryo. Whereas temperatures much higher than the optimum range (ii)_______ the embryo.

1. (i) inhibits (ii) destroys

2. (i) destroys (ii) inhibits

3. (i) enhances (ii) destroys

4. (i) enhances (ii) inhibits

Q. Plants which have flowers with both male and female reproductive parts are called ______________________.

1. Homosexual
2. Bisexual
3. Hetrosexual
4. Unisexual

Q.

What is the optimum condition for seeds to germinate?

1. Air/Oxygen

2. Water

3. Optimum Temperature

4. Pesticides

Q.

People staying in areas with hot climate should have more intake of water than the people staying in areas with cold climate.

1. False

2. True

Q.

Difference between epigeal and hypogeal germination.

Q.

Tropical plant seeds require ___ temperature for germination.

Q. Temperature below the optimum temperature the growth of the embryo.

1. enhances
2. inhibits
3. quickens

Q.

The conditions necessary for germination is/are

1. Water

2. Temperature

3. Oxygen

4. All A, B and C

Q.

Seeds kept in a refrigerator do not germinate because_________

1. They rot

2. They lose viability

3. A refrigerator doesn't provide optimum temperature

4. They do not get sunlight

Q. Water is absorbed by the seed mainly through the _______.

1. hilum
2. micropyle
3. endosperm
4. cotyledons

Q.

Oxygen is necessary for the germination of seeds.

1. True
2. False

Q. Answer the following statements true (T) or false (F)?
Oxygen Is necessary for the germination of seeds.

1. True
2. False

Q.

Seeds sown very deep in the soil fail to germinate because they

1. cannot exert enough force to push the soil upward

2. do not get enough sunlight

3. get too much water

4. do not get enough oxygen

Q. Why the seed sown very deep in soil fail to germinate?

Q. Is soil the only medium for growing plants ? Name 3 different methods of growing plants other than soil.