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