P, Q and R are the three gaseous components of air. Gases P and Q can dissolve in the water
of rivers, lakes and seas but gas R does not dissolve in water. The organisms S which live in
water use the gas P dissolved in water to make their food by the process of photosynthesis. All
the organisms which live in water use the gas Q dissolve in water for releasing energy from food.
Gas R is the major component of air.
i) Identify the gases P, Q and R.
ii) Name the organism S.
Answers
Answer:
P- carbon dioxide
Q- oxygen
R- Nitrogen
S- aquatic plants
Answer: i) As oxygen (O2) is a vital component of air and is easily soluble in water, it is most likely the gas P. As carbon dioxide (CO2) is soluble in water and is a component of both air and gas, it is most likely the gas Q. The most plausible candidate for the gas R, which does not dissolve in water, is nitrogen (N2), which accounts for around 78% of air.
Answer: ii) An aquatic plant or algae is most likely the organism S that utilises gas P dissolved in water for photosynthesis. These organisms transform carbon dioxide and water into glucose and oxygen using the energy from sunshine. The oxygen is released into the water as a byproduct while the glucose is utilised as an energy source for the organism.
It is important to note that there are several varieties of aquatic plants and algae that generate energy through photosynthesis and maybe other gases and minerals dissolved in water. Moreover, fish and bacteria as well as other aquatic creatures may employ various gases and processes to generate energy.
For more questions on Science
https://brainly.in/question/24576823
#SPJ3