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