Organism and population - Quiz 3

Term homeostasis in an ecosystem refers to –

• Self regulatory mechanism

• Feed back mechanism

• Influence of productivity

• State of equilibrium

Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to –

• Western Ghat

• Meghalaya

• Corbett National Park

• Keolado National Park

Allen’s rule applies to

• tribes living in high altitude

• mammals from colder climates

• fish living in Antarctic waters

• desert lizards

An association of individuals of different species living in the same habitat and having functional interactions is

• Ecosystem

• Population

• Ecological niche

• Biotic community

Amongst hydrophytes finely dissected leaves occur in

• Rooted floating leaved plants

• Submerged plants

• Emerged plants

• Free floating plants

Temperature has direct effect on which of the following?

i. body size

ii. size of the extremities of body

iii. mutation

iv. life span

v. metabolism in poikilotherm

• i, iii, and iv

• ii, iii and iv

• ii, iii and v

• i, ii and v

Natality refers to

• Number of individuals leaving the habitat

• Birth rate

• Death rate

• Number of individuals entering a habitat

Ecology is basically concerned with ____ levels of biological organisation

• 3

• 4

• 2

• 5

Climate affects the :-

• Productivity and soil salinity

• Soil salinity and B.O.D.

• Productivity and Topography

• Biodiversity and Decomposition

Cold - blooded animals fall under the category of

• ectotherms

• psychrotherms

• endotherms

• thermophiles