Hydrilla plant can be used to prove that

1. oxygen is consumed during respiration
2. carbon dioxide is consumed during photosynthesis
3. oxygen is evolved during photosynthesis
4. carbon dioxide is evolved during photosynthesis

Nucleotides are made up of

1. phosphate, sugar and nitrogenous bases
2. potassium, sugar and nitrogenous bases
3. potassium, sugar and amino acids
4. phosphate, sugar and amino acids

Most widely used plant growth hormone in agriculture is

1. auxin
2. ethylene
3. cytokinins
4. abscisic acid

Assertion (A) The 'Swachh Bharat Abhiyan' was officially launched on 2nd Oct 2015.

Reason (R) Our Prime Minister Shri Narendra Modi took the cleanliness pledge at India Gate in Delhi. He wanted to fulfill Mahatma Gandhi's dream of a clean and hygienic India.

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