DENDROLOGY

Detailed explanation-1: -Plants remove carbon dioxide and oxygen by vapour through the stomata, this process is called transpiration. Thus waste gaseous products or plants are carbon dioxide and oxygen.

Detailed explanation-2: -This evolutionary innovation is so central to plant identity that nearly all land plants use the same pores-called stomata-to take in carbon dioxide and release oxygen. Stomata are tiny, microscopic and critical for photosynthesis.

Detailed explanation-3: -The waste product of aerobic respiration in plant cells is carbon dioxide. A byproduct of photosynthesis is oxygen. Excess CO2 or O2 in the leaves exits through stomata to the air as part of the excretion process.

Detailed explanation-4: -Once they have water and carbon dioxide, they can use energy from sunlight to make their food. The leftovers from making the plant food is another gas called oxygen. This oxygen is released from the leaves into the air.