NEET Foundation-Zoology-Ecology and Environment Test-4 July 20, 2017admin0 Comments CategoriesEcology Environment NEET Foundation-Zoology-Ecology and Environment Test-4 1. Amount of living material and nutrients present in different trophic levels and soils at any give time are called respectively Standing state and standing crop Standing crop and standing state Standing state and standing quality Biomass and standing crop 2. Biogeochemical cycle having a small gaseous component is found in Phosphorus Nitrogen Carbon Sulphur 3. In which of the following biogeochemical cycles, atmospheric phase is absent/ negligible? Nitrogen Sulphur Phosphorus Water 4. An ecosystem is a complex interacting system of Populations Individuals Communities and their soil conditions Communities and their physical environ-ment 5. Ecosystem has two components Physical and Chemical Biotic and abiotic Weeds and Trees Plants and animals 6. Lion is a Tertiary consumer Primary consumer Primary producer Herbivore 7. Unit of biosphere is……….. Ecosystem Biome Community Population 8. Which of the following belong to the category of primary consumers? Fishes Snakes and frogs Eagles Insects and catties 9. Which has greatest biomass in terrestrial ecosystem ? Decomposers Carnivores of T2 level Producers Herbivores 10. The organisms that thrive upon the remains of dead plants and animals are catogorised as Carnivores Omnivores 3 Scavengers Predators 11. In recycling of mineral elements within an ecosystem the responsible direct acting organisms are called Primary consumers Decomposers Secondary consumers Producers 12. Decomposers (micro-consumers which are also called reducers, transducers, osmotrophs and saprotrophs) are must in an ecosystem for Cyclic exchange of minerals Flow of energy Both (1) and (2) are correct Productivity 13. The energy storage at producer level which can be consumed by herbivore Net productivity Net primary productivity Secondary productivity Gross primary productivity 14. Which of the following statement about decomposition is incorrect? Decomposers break down complex inorganic matter into organic substances Water insoluble organic nutrients go down into the soil horizon during the process of] leaching In fragmentation, detrivores break down detritus into smaller particles Saprophytic bacteria and fungi secrete digestive enzymes over the fragmented detritus 15. Most important climatic factors that regulate the rate of decomposition are Temperature and soil moisture Soil pH and aeration Aeration and temperature Moisture and soil pH 16. About how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis 1% 3.30% 10% 50% 17. Flow of energy declines from lower or first trophic level to upper or top trophic level in ecosystem is mainly explained by First law of thermodynamics Second law of thermodynamics Both of these None of the above 18. A food chain starts with…….. Nitrogen fixationing organisms Photosynthesising organisms Respiration Decomposers 19. As biomass passes from one trophic level to another; the amount of total energy…….. Remains unaffected Increases Declines None of above 20. In a food chain initial organisms are Autotrophs Top consumers in the food chain Primary consumers Secondly consumers Loading … Related posts: NEET Foundation-Zoology-Ecology and Environment Test-9 NEET Foundation-Zoology-Ecology and Environment Test-3 NEET Foundation-Zoology-Ecology and Environment Test-5 NEET Foundation-Zoology-Ecology and Environment Test-6 NEET Foundation-Zoology-Ecology and Environment Test-7 Powered by YARPP.