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Question
Most of the photosynthesis (80%) which takes place on this earth is carried out by
Most of the photosynthesis (80%) which takes place on this earth is carried out by
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Solution
The correct option is D Both B and C
Algae are chlorophyll containing, simple,
thalloid (plant body not differentiated into root, stem and leaf) and
autotrophic organisms. They are largely aquatic, either marine or fresh water.
They also occur in habitats like moist stones, soils and wood. Some of them
also occur in association with fungi (lichen) and animals (e,g, on sloth bear).
Chalamydomonas, Volvox, Spirogyra, etc. are the examples of algae. Most of the
photosynthesis (80%) which takes place on this earth is carried out by algae
present in fresh water and ocean water. At least a half of the total carbon dioxide
fixation on earth is carried out by algae through photosynthesis. Being photosynthesis
they increase the level of dissolved oxygen in their immediate environment. It is
essential for respiration of aquatic life.
Algae are chlorophyll containing, simple, thalloid (plant body not differentiated into root, stem and leaf) and autotrophic organisms. They are largely aquatic, either marine or fresh water. They also occur in habitats like moist stones, soils and wood. Some of them also occur in association with fungi (lichen) and animals (e,g, on sloth bear). Chalamydomonas, Volvox, Spirogyra, etc. are the examples of algae. Most of the photosynthesis (80%) which takes place on this earth is carried out by algae present in fresh water and ocean water. At least a half of the total carbon dioxide fixation on earth is carried out by algae through photosynthesis. Being photosynthesis they increase the level of dissolved oxygen in their immediate environment. It is essential for respiration of aquatic life.
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