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