Tropic Movements

Q. The movement of plant in response to touch is known as:

1. Gravitropism
2. Chemotropism
3. Hydrotropism
4. Thigmotropism

Q. The response of plant roots towards water is called _________.

1. gravitropism
2. phototropism
3. chemotropism
4. hydrotropism

Q.

How do plants respond to light and gravity?

Q. What is the difference between chemotropism and phototropism?

Q.

The growth of pollen tubes towards ovules is due to

1. hydrotropism

2. chemotropism

3. geotropism

4. phototropism

Q. Thigmotropism occurs in response to _____.

1. light
2. chemicals
3. touch
4. water

Q. Movement of plants in response to chemical stimuli is called ____________.

1. chemotropism
2. geotropism
3. hydrotropism
4. phototropism

Q.

Which of the following are completely absent in plants?

1. Nerves

2. Secondary roots

3. Axillary bud

4. Apical bud

Q.

Question 2
How is the movement of leaves of the sensitive plant different from the movement of a shoot towards the light?

Q.

Roots of mangroves are

1. Positively geotropic

2. Negatively geotropic

3. Photonastic

4. Seismonastic

Q.

The tropic movement of plant in response to stimulus of water is called____________.

Q.

What is geotropism?

Q.

The water functions as a stimulus for hydrotropism.

1. True
2. False

Q. Growth of pollen tube towards the ovule is due to:

1. Hydrotropism
2. Phototropism
3. geotropism
4. Chemotropism

Q.

Which of the following is a type of self-induced movement?

1. Bending of roots towards moisture

2. Movement of clouds

3. Drooping of leaves of Mimosa plant

4. Both bending of roots towards moisture and drooping of leaves of Mimosa plant

Q. The movement of plant part in the direction of light is:

1. Phototropism
2. Geotropism
3. Hydrotropism
4. Chemotropism

Q.

Write the role of hypothalamus in the body?

Q.

Given example for a plant whose leaf shows a Mesmerizing movement

Q. State whether the following statement is true or false:
If a seed is inserted upside down into the soil, the stem will grow downwards and the root will grow upwards?

1. True
2. False

Q. What is the difference between chemotropism and phototropism?

Q.

The movement of plant due to touch is called ___

Q. Motor cells help in

1. Inward rolling of leaves
2. Transpiration
3. All of the above
4. Guttation

Q. Growth of pollen tube towards the ovule is due to:

1. Hydrotropism
2. Phototropism
3. geotropism
4. Chemotropism

Q.

Choose the correct answer from each of the four options given below:

Thigmotropism is best seen in

1. Tendrils

2. Stem apex

3. Leaves of sensitive plant

4. Root apex