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