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Water Pollution

Given one exa...

Question

Given one example of each of the following:
(1) A water pollutant
(2) An aquatic plant used in the lab to demonstrate $O_{2}$ liberation during photosynthesis.
(3) An antibiotic.
(4) A nitrogenous base in DNA.

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Solution

(1) Household detergents/ Industrial waste/ Sewage / Oil spills ......
(2) Elodea/ Hydrilla.
(3) Penicillin/ Streptomycin/ Amoxilline .........
(4) Adenine/ Cytosine/ Thymine/ Guanine.

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Similar questions

Q. Give one example of each of the following:
(1) A water pollutant.
(2) An aquatic plant used in the lab to demonstate

O_{2}

liberation during photosynthesis.
(3) An antibiotic.
(4) A nitrogenous base in DNA.

Q. Photosynthesis in an aquatic plant was measured by counting the number of

O_{2}

bubbles coming out ofthe cut end ofthe plant. What will happen to

O_{2}

production if you use a pipe to blow air from your mouth into water in the beaker?

Q. In a lab investigation designed to demonstrate one aspect of photosynthesis, three test tubes were treated as shown above. The test tubes were then placed under a bright lamp for 24 hours. Which of the following is the best explanation for the observed color change in tube 2 ?

Q. Write True (T) or False (F) against the following statements in the given brackets:
1. Plants need oxygen to prepare food during photosynthesis. ( )
2. Aquatic animals use dissolved oxygen from water. ( )
3. Moving air is called wind. ( )
4. Soil does not contain air. ( )
5. Atmosphere is essential for sustaining life on earth. ( )

Q. Which plant is used in an experiment commonly performed in laboratory in demonstrate evolution of oxygen in photosynthesis?

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