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