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