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