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