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