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