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