Environmental Science MCQs

✅ The correct answer is option A.
Growing degree-days is used as a guide to planting and for determining the approximate date for harvesting crops.

✅ The correct answer is option A.
The lag in daily temperature refers to the time lag between the time of maximum solar radiation and the time of maximum temperature.

✅ The correct answer is option B.
Largest reptile in the world Anaconda.

✅ The correct answer is option C.
In 1994, the United Nations General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer.

✅ The correct answer is option A.
Pyramid of number indicates the number of individuals at each trophic level. The pyramid of number is inverted in tree ecosystem. In this, the the first trophic level contains least number of trees. The insects feeding on primary producer occupy second trophic level.

✅ The correct answer is option D.
Energy transformation through the food chain is inefficient.

✅ The correct answer is option C.
The harmful effects of strontium-90 are caused by the high energy effects of radiation. Since radioactive strontium is taken up into bone, the bone itself and nearby soft tissues may be damaged by radiation released over time.

✅ The correct answer is option B.
Acidity and alkalinity are measured on the pH scale of 0-14. On this scale, 7 is neutral, higher is alkaline, lower is acidic. At around 8.2, sea water are slightly alkaline.

✅ The correct answer is option A.
The organisms which occur primarily or most abundantly in the ecotone are known as edge species.

✅ The correct answer is option A.
Those gas molecules in the Earth’s atmosphere with three or more atoms are called “greenhouse gases” because they can capture outgoing infrared energy from the Earth, thereby warming the planet. The greenhouse gases include water vapor with three atoms (H2O), ozone (O3), carbon dioxide (CO2), and methane (CH4).