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