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