Reason
Chlorophyll of the green plants causes greenhouse effect.
Assertion
For greenhouse effect, presence of green plants is essential.
A
Assertion is correct but Reason is incorrect
B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
C
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
D
Both Assertion and Reason are incorrect
Correct option is D. Both Assertion and Reason are incorrect
A greenhouse traps the sun's rays and keeps the heat from escaping. It is warm inside. Certain gases in the atmosphere such as carbon dioxide, methane, and water vapor trap energy from the sun. The natural greenhouse gases act like a big blanket around the earth, keeping it warm. The presence of green plants reduces global warming.
The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without this atmosphere. The gases that contribute to the greenhouse effect include water vapor, carbon dioxide $$(CO_2)$$, methane, nitrous oxides, and chlorofluorocarbons (CFCs). On Earth, human activities are changing the natural greenhouse and increasing the concentration of greenhouse gases.
Hence option A is the correct answer.