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