EVERYDAY SCIENCE

SCIENCE

ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which process uses oxygen in plants, algae, and animals?
A
photosynthesis
B
respiration
C
chemosynthesis
D
transpiration
Explanation: 

Detailed explanation-1: -Most life on Earth depends on photosynthesis. The process is carried out by plants, algae, and some types of bacteria, which capture energy from sunlight to produce oxygen (O2) and chemical energy stored in glucose (a sugar).

Detailed explanation-2: -Plants do not breathe, they only respire through their leaves. Animals breathe air for cellular respiration. Carbon dioxide released during respiration is utilized by plants for the photosynthesis process. Carbon dioxide released during respiration is not utilized by animals; it is released outside the body.

Detailed explanation-3: -The process of respiration in plants involves using the sugars produced during photosynthesis plus oxygen to produce energy for plant growth. In many ways, respiration is the opposite of photosynthesis. In the natural environment, plants produce their own food to survive.

Detailed explanation-4: -Photosynthesis vs. cellular respiration In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. Oxygen is released as a byproduct. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process.

Detailed explanation-5: -This energy is used: to drive the chemical reactions needed to keep organisms alive – the reactions to build complex carbohydrates, proteins and lipids from the products of photosynthesis in plants, and the products of digestion in animals, require energy.

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