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