A) Eschew B) Fresh water C) Marine D) Estuarine
A) Presence of high-level oxygen B) High salinity C) Low light penetration D) Presence of low level oxygen
A) Meridian zone B) Supratidal zone C) Benthic zone D) Littoral zone
A) High concentration of oxygen content B) Low concentration of oxygen content C) Low salinity D) Variation in temperature
A) Eutriphication B) Eutropication C) Etrophication D) Eutrophication
A) Existence of canopies B) Presence of broad leaves C) Presence of thick barks D) Presence of buttress root.
A) Great Britain desert B) Arabian desert C) Kalahari desert D) Great Australian desert
A) Respiratory medium B) Respiratory surface C) Transportation medium D) Water vapour
A) Large surface area to aid easy diffusion of gases B) Moist surface C) Small area to aid easy diffusion of gases D) Thin-walled to shorten diffusion distance and make diffusion easier and faster
A) Gill fume B) Gill arch C) Gill raker D) Gill filament
A) Hormonal secretion B) Ultra filteration C) Glomerulus in the bowman's capsule D) Selective reabsorption
A) Henle's loop B) Urethra C) Distal tubule D) Bowman's capsule
A) War B) Poor storage facilities C) Urbanisation D) Overpopulation
A) Decline in the rate of reproduction B) Competition C) Increased supply of a particular type of food D) Emigration
A) Parasites B) Heat C) Space D) Water
A) Light B) Mortality C) Food D) Competition
A) Dispersal B) Limiting factor C) Balance in nature D) Environmental resistance
A) Prevention of population explosion B) Prevention of indiscriminate abortion C) Promotion of maternal and mother's health D) Increased risk of STDs
A) Contractile vacuole B) Endoplasmic reticulum C) Ribosome D) Cytoplasm
A) Osmotic pressure balance B) Neutralisation C) Concentration gradient D) Homeostasis
A) Camouflage B) Salt-excreting glands C) Osmoregulation D) Water-retaining cells
A) Shallow roots B) No roots C) Deep roots D) Stilt roots
A) Water-retaining cells B) Salt-excreting glands C) Waxy coating D) Thick cuticle
A) Freshwater zone B) Desert zone C) Intertidal zone D) Grassland zone
A) Decreased heart rate B) Decreased oxygen delivery to cells C) Increased blood pressure D) Increased efficiency of oxygen delivery to cells
A) Blood passes through a heart with four chambers B) Blood is pumped directly to the entire body C) Blood is transported in a closed system of blood vessels D) Blood flows from the heart to the gills and then to the rest of the body
A) To regulate blood pressure B) To store blood C) To exchange oxygen and nutrients with cells D) To transport large molecules
A) To transport hormones and growth factors B) To transport water and minerals C) To transport oxygen and carbon dioxide D) To transport sugars and amino acids
A) Flowers B) Stems C) Leaves D) Roots
A) Sugars B) Amino acids C) Minerals D) Water
A) Collenchyma B) Phloem C) Cambium D) Xylem
A) The movement of oxygen from leaves to roots B) The movement of water and minerals from roots to leaves C) The movement of sugars and amino acids from leaves to roots D) The movement of hormones from shoots to roots
A) Transpiration pull B) Adhesion C) Root pressure D) Cohesion
A) Lenticular transpiration B) Stomata transpiration C) Cuticular transpiration D) Root transpiration
A) Translocation B) Respiration C) Evaporation D) Photosynthesis
A) Light B) Humidity C) Temperature D) Water availability
A) The force that pulls water up the xylem B) The force that repels water from the xylem C) The force that pushes water up the xylem D) The force that holds water in the xylem
A) Translocation experiment B) Photosynthesis experiment C) Respiration experiment D) Potometer experiment
A) mL/hr B) cm3/sec C) mL/min D) mm/sec
A) The movement of water from high to low concentration B) The movement of water from low to high concentration C) The movement of water from low to low concentration D) The movement of water from high to high concentration |