NEET BIOLOGY

BIOLOGICAL CLASSIFICATION

KINGDOM PROTISTA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Algae are important because
A
They produce most of the oxygen we breathe in
B
They produce most of the carbon dioxide we breathe in
C
They eliminate our marine life
D
All of the above
Explanation: 

Detailed explanation-1: -In addition to making organic molecules, algae produce oxygen as a by-product of photosynthesis. Algae produce an estimated 30 to 50 percent of the net global oxygen available to humans and other terrestrial animals for respiration.

Detailed explanation-2: -Prochlorococcus and other ocean phytoplankton are responsible for 70 percent of Earth’s oxygen production.

Detailed explanation-3: -Oxygen is produced by photosynthesizing organisms that live in the ocean, in fresh water, and on land. These organisms include bacteria, algae and plants. Photosynthesizing algae in the ocean produce around 70% of oxygen in the atmosphere.

Detailed explanation-4: -In photosynthesis, plants and algae use solar energy to take carbon dioxide (CO2) from the air and synthesize sugars. This process produces oxygen as a byproduct, which earth’s animals depend on to breathe.

Detailed explanation-5: -Algae provide much of Earth’s oxygen, serve as the food base for almost all aquatic life, and provide foods and industrial products, including petroleum products. Their photosynthetic pigments are more varied than those of plants, and their cells have features not found among plants and animals.

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