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