Populations and Ecosystem

Populations termed r-strategists

Populations termed r-strategists Options (a) have J-shaped growth curve (b) are usually pioneer species (c) have type III survivorship curve…

Predation and parasitism are which type of interactions?

Predation and parasitism are which type of interactions? Options (a) (+ , +) (b) (+ , O) (c) (- ,…

Pyramid of energy in a pond ecosystem is always

Pyramid of energy in a pond ecosystem is always Options (a) inverted (b) upright only (c) irregular (d) linear Correct…

Ratio of natality and mortality of a population expressed in percentage is

Ratio of natality and mortality of a population expressed in percentage is Options (a) vital index (b) growth rate (c)…

Rhododendron is characteristic of vegetation of

Rhododendron is characteristic of vegetation of Options (a) tropical zone (b) gangetic plains (c) alpine zone (d) mangrove belt Correct…

Role of nitrifying bacteria, in niterogen cycle, is to

Role of nitrifying bacteria, in niterogen cycle, is to Options (a) convert ammonia into nitrates (b) fix atmospheric nitrogen (c)…

Roots of higher plants show symbiosis with mycorrhizas for obtaining

Roots of higher plants show symbiosis with mycorrhizas for obtaining Options (a) sulphates (b) nitrogen (c) phosphates (d) all of…

Source of energy in an ecosystem is

Source of energy in an ecosystem is Options (a) sun (b) ATP (c) sugar made by plant (d) green plant…

Stratification is found in

Stratification is found in Options (a) tropical forest (b) deciduous forest (c) savannah (d) tropical and deciduous forest Correct Answer:…

Symbiosis is shown by

Symbiosis is shown by Options (a) Cuscuta (b) E. coil (c) Rafflesia (d) Monotropa Correct Answer: E. coilExplanation:No explanation available.…