RRB JE Mock Test 2019

1. Ozone hole refers to                            (3)

1. 1. hole in ozone layer
2. 2. decrease in the ozone layer in troposphere
3. 3. decrease in thickness of ozone layer in stratosphere
4. 4. increase in the thickness of ozone layer in troposphere

2.  Plants receive their nutrients mainly from               (4)

1. 1. chlorophyll
2. 2. atmosphere
3. 3. light
4. 4. soil

3. Movement of cell against concentration gradient is called           (2)

1. 1. osmosis
2. 2. active transport
3. 3. diffusion
4. 4. passive transport

4. Photosynthesis generally takes place in which parts of the plant?         (1)

1. 1. Leaf and other chloroplast bearing parts
2. 2. stem and leaf
3. 3. Roots and chloroplast bearing parts
4. 4. Bark and leaf

5. Plants synthesis protein from           (3)

1. 1. starch
2. 2. sugar
3. 3. amino acids
4. 4. fatty acids