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