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