As Bio - Transport In Plants
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A quiz on Transport in Plants. . .
- 1.Which of these is not a reason why plants need a transport system?
- A.
They can't rely on diffusion alone
- B.
Too active
- C.
Small surface area to volume ratio
- D.
Multicellular
- 2.Xylem tissue doesn't carry...
- A.
Water
- B.
Inorganic substances
- C.
Organic nutrient
- 3.How does phloem transport sugars?
- A.
Transpiration
- B.
Translocation
- 4.The distribution of the xylem and phloem in the stem is like:
- A.
Xylem in the middle and phloem outside
- B.
Seperate vascular bundles around a medula
- C.
Forming a central midribi
- 5.Root hair cells absorb mineral ions using
- A.
Active transport
- B.
Diffusion
- C.
Osmosis
- 6.Active transport of minerals creates a water potential gradient into the
- 7.Which is the most commonly used pathway for water
- A.
Symplast pathway
- B.
Apoplast pathway
- C.
Vacuolar pathway
- 8.In the cell wall what enables the apoplast pathway to function
- A.
Cellulose
- B.
Water filled spaces
- C.
Cytoplasm
- D.
Oxygen
- 9.In the symplast pathway through what does the water move from cell to cell?
- 10.The casparian strip at the endodermis blocks which pathway?
- A.
Apoplast
- B.
Symplast
- 11.The casperian strip contains what making it waterproof?
- A.
Waxy cutile
- B.
Fibres
- C.
Suberin
- 12.Which of these is not an adaption of parenchyma?
- A.
Elongated cells
- B.
Isodimetric
- C.
No cholorplast
- 13.What is the role of the fibres?
- A.
Support vessels
- B.
Transport water
- C.
Packing tissue
- 14.Why are xylem cells dead?
- A.
Because they have no nucleus
- B.
Lignin is impermeable
- C.
Just because
- 15.Transpiration is:
- A.
The movement of water up the xylem using osmosis
- B.
The loss of water vapour from areal parts of the plant due to evaporation
- 16.Which of these is not an advantage of transpiration?
- A.
It enables a transpiration stream
- B.
Aids translocation
- C.
Cooling effect
- 17.Because of ________ the molecules gain more kinetic energy spreading out faster. ______ also provides latent heat of vapourisation.
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