Top 150+ Solved Environmental Science MCQ Questions Answer
Q. Which of the following can act as a pioneer species in a xerach succession
a. Lichens
b. Humans
c. Herbs
d. Animals
Q. Energy flow in an ecosystem is
a. Bidirectional
b. Unidirectional
c. Multidirectional
d. All rounds
Q. Which of the following is an example of a man-made ecosystem
a. Tissue culture
b. Herbarium
c. Aquarium
d. Forest
Q. If in a population, natality is balanced by mortality, then there will be
a. Decrease in population growth
b. Increase in population growth
c. Zero population growth
d. Over population
Q. In a pyramid of numbers in grassland ecosystems, the largest population is that of
a. Herbivores
b. Primary consumers
c. Secondary consumer
d. Producers
Q. Which of these belong to the category of primary consumers in grazing food chain
a. snakes and frogs
b. Insects and cattle
c. Eagle and snakes
d. Cow and rabbit
Q. The pyramid of energy is always upright for any ecosystem, this situation indicates that
a. Herbivores have better energy conversion efficiency than carnivores
b. Producers have the lowest energy conversion efficiency
c. Carnivores have a better energy conversion efficacy than herbivores
d. Energy conversion efficiency is same at all trophic levels
Q. Which of the ecological pyramid is always upright
a. Pyramid of numbers
b. Pyramid of biomass
c. Pyramid of energy
d. All of the above
Q. Which one of the following is not a gaseous biogeochemical cycle
a. Nitrogen cycle
b. Carbon cycle
c. Sulphur cycle
d. Phosphorus cycle
Q. Deserts, grasslands, forests and tundra regions are the examples of
a. Biomes
b. Biogeographically regions
c. Ecosystems
d. Biospheres
Q. The final stable community in ecological succession is
a. Climax
b. Pioneer
c. Sere
d. Carnivores