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