A) Fresh water B) Marine C) Eschew D) Estuarine
A) Presence of high-level oxygen B) Low light penetration C) Presence of low level oxygen D) High salinity
A) Littoral zone B) Supratidal zone C) Benthic zone D) Neptunic zone
A) High concentration of oxygen content B) Low salinity C) Variation in temperature D) Low concentration of oxygen content
A) Eutropication B) Eutrophication C) Eutriphication D) Etrophication
A) Presence of buttress root. B) Presence of thick barks C) Existence of canopies D) Presence of broad leaves
A) Kalahari desert B) Arabian desert C) Great Britain desert D) Great Australian desert
A) Transportation medium B) Respiratory medium C) Water vapour D) Respiratory surface
A) Moist surface B) Small area to aid easy diffusion of gases C) Large surface area to aid easy diffusion of gases D) Thin-walled to shorten diffusion distance and make diffusion easier and faster
A) Gill arch B) Gill raker C) Gill foam D) Gill filament
A) Ultra filteration B) Glomerulus in the bowman's capsule C) Selective reabsorption D) Hormonal secretion
A) Distal tubule B) Urethra C) Bowman's capsule D) Henle's loop
A) Urbanisation B) War C) Overpopulation D) Poor storage facilities
A) Increased supply of a particular type of food B) Competition C) Emigration D) Decline in the rate of reproduction
A) Water B) Heat C) Space D) Parasites
A) Competition B) Light C) Food D) Mortality
A) Dispersal B) Environmental resistance C) Limiting factor D) Balance in nature
A) Prevention of indiscriminate abortion B) Prevention of population explosion C) Increased risk of STDs D) Promotion of maternal and mother's health
A) Ribosome B) Contractile vacuole C) Endoplasmic reticulum D) Cytoplasm
A) Osmotic pressure balance B) Concentration gradient C) Homeostasis D) Neutralisation |