19068.An ecosystem which can be easily damaged but can recover after some time if damaging effect stops will be having
High stability and high resilience
Low stability and low resilience
High stability and low resilience
Low stability and high resilience
19069.Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
Nitrogen cycle
Carbon cycle
Sulphur cycle
Phosphorus cycle
19070.Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
Level one PP is "pipal trees" and the level SC is "sheep"
Level PC is "rats" and level SC is "cats"
Level PC is "insects" and level SC is "small insectivorous birds"
Level PP is "phytoplanktons" in sea and "Whale" on top level TC
19071.Identify the possible link "A" in the following food chain:Plant → insect → frog → "A" → Eagle
Cobra
Parrot
Rabbit
Wolf
19073.Which one of the following is not a functional unit of an ecosystem?
Productivity
Stratification
Energy flow
Decomposition
19074.The type of ecosystem with the highest mean plant productivity is
Tropical rain forest
Temperate grassland
Desert
Tundra
19075.Trophic levels in ecosystem is formed by:
only herbivores
only plants
only bacteria
Organisms linked in food chain
19076."Complete competitors cannot coexist" is true for
Primary succession
Secondary succession
Competitive exclusion
Character displacement
19077.Bell-shaped polygonal pyramid indicates
Low percentage of young individuals
Moderate percentage of young individuals
High percentage of young individuals
Low percentage of old individuals
19078.Which one of the following ecosystem types has the highest annual net primary productivity?
Tropical deciduous forest
Tropical rain forest
Temperate deciduous forest
Temperate evergreen forest
19079.The average trophic efficiency of transfer of energy from one trophic level to the. higher trophic level is called
Linderman's trophic efficiency rule
Exploitation efficiency
Assimilation efficiency
Gross primary production
19082.In a lake, phytoplankton grow in abundance in
Littoral zone
Limnetic zone
Profundal zone
Benthic region
19083.Which one of the following types of organisms occupy more than one trophic level in a pond ecosystem?
Frog
Phytoplankton
Fish
Zooplankton
19085.Which of the following is correctly matched?
Butterfly -------- camouflage
Garden lizard -------- mimicry
House lizard -------- autotomy
None of these