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