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