HORTICULTURE

Detailed explanation-1: -During photosynthesis, plants take in carbon dioxide and give out oxygen as a byproduct. The oxygen given out is utilized by humans and other animals for carrying out their own cellular functions.

Detailed explanation-2: -Raw materials required are:-Carbon dioxide, water, and sunlight. The gas used up is carbon dioxide. The end product obtained by photosynthesis are glucose and oxygen. Oxygen is given out as a waste product during photosynthesis.

Detailed explanation-3: -This leftover oxygen is really important because humans and other animals need this oxygen to live which we breathe in from the air. When we breathe out, we release carbon dioxide into the air which is then used by the plants to make their food and the cycle starts all over again.

Detailed explanation-4: -Statement 1: During respiration, humans and animals take in carbon dioxide and release oxygen. Statement 2: During photosynthesis, plants utilise carbon dioxide and release oxygen.

Detailed explanation-5: -We breathe in oxygen and breathe out carbon dioxide.