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