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