Transport Lowersixth Science Biology

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Test knowledge on xylem, phloem, and water potential.

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Transport Lowersixth Science Biology


Froggy Jumps Transport Lowersixth Science BiologyVersión en línea Test knowledge on xylem, phloem, and water potential. por YAKILI LMS 1 What transports water and minerals from roots to leaves? a Phloem b Cortex c Xylem 2 Which tissue mainly conducts sugars in plants? a Xylem b Phloem c Epidermis 3 Xylem vessels are primarily made of which cell type? a Sieve tube elements b Parenchyma cells c Vessel elements and tracheids 4 What is the main function of xylem lignin? a Strength and waterproofing b Photosynthesis c Gas exchange 5 Phloem transport moves sap mainly via what process? a Mass flow b Transpiration c Diffusion 6 Which structure is involved in water movement under tension? a Phloem sieve tubes b Xylem vessels c Collenchyma 7 What are lateral roots primarily for? a Seed production b Increasing water absorption c Photosynthesis 8 Which component affects water potential the most? a Pressure potential (Ψp) b Solute potential (Ψs) c Temperature potential 9 Water potential is highest in which condition? a Plasmolyzed cell b Pure water at atmospheric pressure c Fully turgid cell 10 A fully turgid plant cell has what kind of ψs? a Low (negative) solute potential b High positive solute potential c Zero solute potential 11 What happens to a plant cell in a hypertonic solution? a Turgidity increases b Plasmolysis occurs c Cell wall breaks 12 Which is a component of water potential? a Solute potential b Osmotic pressure c Hydrogen potential 13 What does turgor pressure depend on? a Water status in vacuole b ATP availability c Chlorophyll content 14 What condition describes a flaccid cell? a Loose cell membrane, reduced turgor b Fully inflated vacuole c Plasmolysed 15 Plasmolysis occurs when cells are in what solution? a Isotonic b Hypotonic c Hypertonic 16 Which pathway moves sucrose in the phloem? a Active loading at source b Passive diffusion c Phloem embolism 17 Which phloem component carries sugars? a Companion cells only b Xylem tracheids c Sieve tube elements 18 What supports sieve plates in phloem? a Pores b Lignin c Chloroplasts 19 Which cells load sucrose into phloem sieve tubes? a Xylem parenchyma b Companion cells c Epidermal cells 20 Osmosis is the movement of water from a Waterless regions b Low to high water potential c High water potential to low 21 Which condition defines plasmolysis? a Vacuole swells b Cell wall thickens c Cell membrane pulls away from wall 22 In osmosis, solute concentration affects a Oxygen uptake b Chlorophyll production c Water potential 23 Which factor lowers water potential of a cell? a Expanding vacuole b Low solute concentration c High solute concentration 24 Which plant tissue is responsible for structural support? a Xylem with lignified walls b Phloem with sieve plates c Cortex cells 25 Root pressure contributes to water rise in which plant part? a Xylem b Phloem c Phloem cap 26 Which is NOT a function of xylem? a Food transport b Support c Water transport 27 What kind of plant tissue adapts well to water transport? a Xylem vessels and tracheids b Phloem sieve tubes c Cortex 28 What is the unit for potential in water studies? a Liters b Megapascal (MPa) or bars c Moles 29 Which path forms a continuous water column in xylem? a Osmotic gradient b Active transport c Hydraulic continuity 30 What causes transpirational pull? a Water loss from leaves b Phloem loading c Root absorption only 31 Which process helps phloem sap move toward sinks? a Diffusion alone b Active transport only c Mass flow due to pressure difference 32 What is a sink in plant transport? a Tissue that uses or stores sugars b Rootless leaf c Source only 33 Which component is high in a fully turgid cell? a Chlorophyll b Protoplasm leakage c Hydrostatic pressure 34 Which condition increases water potential? a More negative Ψs b Lower pressure c Increased solute potential (less negative) 35 What happens to a cell in a hypotonic solution? a Water enters, turgor increases b Water leaves, plasmolysis c No change 36 Xylem adaptations include: a Thin walls and living cells b Lignified walls and hollow tubes c Sieve plates only 37 What defines the water potential equation? a Ψ = Ψa + Ψb b Ψ = Ψt + Ψm c Ψ = Ψs + Ψp 38 Which process lowers Ψs in a cell? a Accumulating solutes b Expelling solutes c Increasing temperature 39 What is the main osmoregulation in plants? a Photosynthesis b Cell division c Maintaining water balance 40 Which is a transport adaptation in phloem? a Sieve plates with pores b Rigid lignin walls c Nucleus enlargement 41 Which cell maintains phloem function? a Epidermal cell b Endodermis cell c Companion cell 42 Which describes a plant in isotonic solution? a No movement of water b Ψs equals external Ψs c Rapid water influx 43 What does osmosis require? a Active transport b Stomatal opening c Semipermeable membrane 44 Where is water potential lowest in osmotic terms? a Pure water b Atmospheric air c Location with high solute concentration 45 Which plant tissue conducts mineral ions? a Cortex b Phloem c Xylem 46 Which component helps water move up in trees? a Root hair diffusion b Cavitation resistance in xylem c Active transport in phloem 47 Which is a key adaptation of xylem? a Thin walls b Lignified cell walls c Living cells only 48 Phloem sap is rich in a Water only b Sugars and amino acids c Lipids 49 Which component reduces water loss in leaves? a Stomatal opening b Stomatal closure c Lignin deposition 50 What does hydrostatic pressure in phloem cause? a Movement of sap b Water loss c Gas exchange

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Transport Lowersixth Science BiologyVersión en línea

por YAKILI LMS

What transports water and minerals from roots to leaves?

Which tissue mainly conducts sugars in plants?

Xylem vessels are primarily made of which cell type?

What is the main function of xylem lignin?

Phloem transport moves sap mainly via what process?

Which structure is involved in water movement under tension?

What are lateral roots primarily for?

Which component affects water potential the most?

Water potential is highest in which condition?

A fully turgid plant cell has what kind of ψs?

What happens to a plant cell in a hypertonic solution?

Which is a component of water potential?

What does turgor pressure depend on?

What condition describes a flaccid cell?

Plasmolysis occurs when cells are in what solution?

Which pathway moves sucrose in the phloem?

Which phloem component carries sugars?

What supports sieve plates in phloem?

Which cells load sucrose into phloem sieve tubes?

Osmosis is the movement of water from

Which condition defines plasmolysis?

In osmosis, solute concentration affects

Which factor lowers water potential of a cell?

Which plant tissue is responsible for structural support?

Root pressure contributes to water rise in which plant part?

Which is NOT a function of xylem?

What kind of plant tissue adapts well to water transport?

What is the unit for potential in water studies?

Which path forms a continuous water column in xylem?

What causes transpirational pull?

Which process helps phloem sap move toward sinks?

What is a sink in plant transport?

Which component is high in a fully turgid cell?

Which condition increases water potential?

What happens to a cell in a hypotonic solution?

Xylem adaptations include:

What defines the water potential equation?

Which process lowers Ψs in a cell?

What is the main osmoregulation in plants?

Which is a transport adaptation in phloem?

Which cell maintains phloem function?

Which describes a plant in isotonic solution?

What does osmosis require?

Where is water potential lowest in osmotic terms?

Which plant tissue conducts mineral ions?

Which component helps water move up in trees?

Which is a key adaptation of xylem?

Phloem sap is rich in

Which component reduces water loss in leaves?

What does hydrostatic pressure in phloem cause?