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