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