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