1)  Through, which of the following, energy enters in an ecosystem? a) Producers b) consumers c) herbivores d) Primary Producers 2) Through, which of the following, energy enters in an ecosystem? a) ATP b) Sun c) Light d) The Green plant 3) The word ‘‘ecosystem’’ was first coined by a) Weaver and Clements b) A.G. Tansley c) E.P. Odum d) By all the above 4) An ecological system is a a) Biological system b) Bioecological system c) Physicochemical system d) Biogeochemical system 5) Which among the following shows unidirectional flow in an ecosystem? a) Carbon b) Oxygen c) Nitrogen d) Energy 6) The herbivores are also called a) primary consumers b) secondary consumers c) tertiary consumers d) none of above 7) In a food chain, the total amount of living material is depicted by a) pyramid of biomass b) pyramid of number c) pyramid of energy d) Trophic levels 8) Why organisms in food chains are grouped into categories? a) to form community b) to share the energy c) to form the trophic levels d) to get more energy 9) In which of the following weeds are placed a) primary producers b) secondary consumer c) primary consumer d) decomposer 10) In the food relationship, where the tiger eats the deer and the deer eats plants. Which of the following conditions is true? a) The tiger is the prey b) The tiger is the primary consumer c) The deer is the predator d) The deer is the prey 11) we can find marine ecosystem on a beech shore a) true b) false 12) weather such as rain and soil are considered to be a part of the which factors of an ecosystem? a) Biotic factor b) Abiotic factor c) antibiotic d) biomass 13) Which Source of eutrophication is the modern source of phosphorus ? a) Detergent b) Fertilizer c) Faecal of animals d) Rivers 14) Which one of the following is more likely to increase biodiversity? a) captive breeding programmes b) climate change c) human population growth d) monoculture

Ecosystems and biodiversity

by
Print
Embed

Leaderboard

Visual style

Options

Switch template

Continue editing: ?