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