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