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