Environmental Science - Study Mode
[#76] Photosynthesis is found in
Correct Answer
(A) Producers
Explanation
Solution: In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.
[#77] Organisms which depend on Producers for nutrition are called
Correct Answer
(C) Consumers
Explanation
Solution: Organisms are characterized into two broad categories based upon how they obtain their energy and nutrients: autotrophs and heterotrophs. Autotrophs are known as producers because they are able to make their own food from raw materials and energy. Examples include plants, algae, and some types of bacteria. Organisms which depend on Producers for nutrition are called heterotrophs or consumers.
[#78] Phytoplankton are
Correct Answer
(B) Producers of lakes
Explanation
Solution: Phytoplankton are producers of lakes.
[#79] Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly:
Correct Answer
(C) 50% of the air molecules in the atmosphere
Explanation
Solution: Much of Tibet lies at altitudes over 18,000 feet where the pressure is about 500 mb. At such altitudes, the Tibetans are above roughly 50% of the air molecules in the atmosphere.
[#80] Mobile combustion accounts
Correct Answer
(C) 50-60 % of air pollution
Explanation
Solution: Mobile combustion accounts 50-60 % of air pollution.