Chromosomes are arranged at equatorial plate in

1. prophase
2. metaphase
3. anaphase
4. telophase

Which out of these can dissolve chlorophyll?

1. NaCl
2. Methylated spirit and alcohol
3. Sugar solution
4. Iodine solution

Assertion (A): Application of ethylene phytohormone induces fruit ripening.

Reason (R): Ethylene is the only hormone which is a gas at ordinary temperature.

1. Both A and R are true
2. Both A and R are false
3. A is true and R is false
4. A is false and R is true

Which of the following is an external factor that affects the rate of transpiration?

1. Leaf area
2. Age of plants
3. Water content of leaves
4. Carbon dioxide concentration