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