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