ECOLOGY
ENERGY FLOW AND PRIMARY PRODUCTION
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Oxygen inhaled by animals.
|
|
|
Oxygen released by animals.
|
|
|
Oxygen released by plants.
|
|
|
Oxygen taken in by animals.
|
Detailed explanation-1: -Plants use photosynthesis to capture carbon dioxide and then release half of it into the atmosphere through respiration. Plants also release oxygen into the atmosphere through photosynthesis.
Detailed explanation-2: -Photosynthesis by primitive plants and algae released oxygen, which gradually built up in the atmosphere. Eventually, the amount of oxygen present in the atmosphere enabled animals to evolve.
Detailed explanation-3: -Photosynthesis: Plants release oxygen during the day in the presence of sunlight through the process of photosynthesis. It is the process in which plants take up carbon dioxide and water, and in the presence of sunlight and chlorophyll, produce glucose and oxygen.
Detailed explanation-4: -Plants produce oxygen as a waste product of making sugar using sunlight, carbon dioxide, and water. If a plant needs energy, but doesn’t have sunlight, then it can burn the sugar that it made back when it had sunlight, and doing so requires oxygen.
Detailed explanation-5: -Plants consume carbon dioxide which is released by the animals. This is how plants help in maintaining a balance of oxygen and carbon dioxide in atmosphere.