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