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