Environmental Science MCQs

✅ The correct answer is option A.
Viable material of endangered species can be preserved by gene bank. Gene bank is an institute that maintains stocks of viable seeds (seed banks), live growing plants (orchards), tissue culture and frozen germplasm with the whole range of genetic variability.

✅ The correct answer is option B.
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.

✅ The correct answer is option B.
Liquefied Petroleum Gas or LPG (also called Autogas) consists mainly of propane, propylene, butane, and butylene in various mixtures. It is produced as a by-product of natural gas processing and petroleum refining. The components of LPG are gases at normal temperatures and pressures.

✅ The correct answer is option C.
This deals with the relationship between the numbers of primary producers and consumers of different levels. It is a graphical representation of the total number of individuals of different species, belonging to each trophic level in an ecosystem.

✅ The correct answer is option A.
This type of vegetation is found in the north-western part of the country including semi-arid areas of Gujarat,Rajasthan, Madhya Pradesh, Chhattisgarh, Uttar Pradesh and Haryana. Acacias, palms, euphorbias and cacti are the main plant species.

✅ The correct answer is option B.
An increase in albedo would be accompanied by a decrease in radiative equilibrium temperature.

✅ The correct answer is option E.
The main reasons for warm summers in northern middle latitudes is that the sun is higher in the sky and we receive more direct solar radiation and the days are longer.

✅ The correct answer is option C.
An ecotone is a transition area between two biomes. It is where two ecosystems overlap each other. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems).

✅ The correct answer is option D.
If the Earth had no atmosphere then the sky would have looked dark. The original colour of the sky(or space) is black. Just the atmosphere of the Earth gives the colour white, blue and dark blue.

✅ The correct answer is option B.
Deforestation, clearance, clearcutting or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests.