Match the pairs and explain-1-c- -A- 1c- -B- 1- Growth of pollen tube towards ovule a- Gravitropic movement 2- Growth of shoot system b- Chemotropic movement 3- Growth of root system c- Phototropic movement 4- Growth towards water d- Growth-irrelevant movement e- Hydrotropic movemen

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Standard X

Biology

Movement in Plants

Match the pai...

Question

Match the pairs and explain.

'A' 'B'

1. Growth of pollen tube towards ovule

2. Growth of shoot system

3. Growth of root system

4. Growth towards water

a. Gravitropic movement
b. Chemotropic movement
c. Phototropic movement
d. Growth-irrelevant movement
e. Hydrotropic movemen

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Solution

'A' 'B'

1. Growth of pollen tube towards ovule

2. Growth of shoot system

3. Growth of root system

4. Growth towards water

b. Chemotropic movement
c. Phototropic movement
a. Gravitropic movement
e. Hydrotropic movement

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Question 18
The growth of pollen tubes towards ovules is due to

(a) hydrotropism
(b) chemotropism
(c) geotropism
(d) phototropism

Q. The growth of a pollen tube towards the ovule caused by a sugary substance as stimulus is an example of :
(a) phototropism
(b) chlorotropism
(c) gravitropism
(d) chemotropism

Match the following:

$\begin{matrix} A & B (1) Growth of sunflower towards a light source & (i) Chemotropism (2) Growth of tree roots towards earth & (ii) Hydrotropism (3) Growth of plant roots towards or away from moisture & (iii) Phototropism (4) Growth of a plant part in response to a chemical stimulus & (iv) Geotropism \end{matrix}$

Phototropic movement of shoot and geotropic movement of root are called growth movements in plants.

Q. Specify the type of movement shown by growth of pollen tube towards ovule.

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'A'	'B'
1. Growth of pollen tube towards ovule 2. Growth of shoot system 3. Growth of root system 4. Growth towards water	a. Gravitropic movement b. Chemotropic movement c. Phototropic movement d. Growth-irrelevant movement e. Hydrotropic movemen

'A'	'B'
1. Growth of pollen tube towards ovule 2. Growth of shoot system 3. Growth of root system 4. Growth towards water	b. Chemotropic movement c. Phototropic movement a. Gravitropic movement e. Hydrotropic movement

Match the pairs and explain. 'A' 'B' 1. Growth of pollen tube towards ovule 2. Growth of shoot system 3. Growth of root system 4. Growth towards water a. Gravitropic movement b. Chemotropic movement c. Phototropic movement d. Growth-irrelevant movement e. Hydrotropic movemen

'A' 'B' 1. Growth of pollen tube towards ovule 2. Growth of shoot system 3. Growth of root system 4. Growth towards water b. Chemotropic movement c. Phototropic movement a. Gravitropic movement e. Hydrotropic movement

Match the pairs and explain.

'A' 'B'

1. Growth of pollen tube towards ovule

2. Growth of shoot system

3. Growth of root system

4. Growth towards water

a. Gravitropic movement
b. Chemotropic movement
c. Phototropic movement
d. Growth-irrelevant movement
e. Hydrotropic movemen

'A' 'B'

1. Growth of pollen tube towards ovule

2. Growth of shoot system

3. Growth of root system

4. Growth towards water

b. Chemotropic movement
c. Phototropic movement
a. Gravitropic movement
e. Hydrotropic movement