1.2 Mineral salts for plants/1.3 Plants and water

Which of these mineral ions is NOT needed by a plant?

• Magnesium

• Nitrate

• Phosphorus

• Calcium

Which plant cell is adapted for absorbing mineral ions from the soil?

• Guard cell

• Root hair cells

• Palisade cell

• Spongy cell

Which mineral ions are needed for chlorophyll in plants?

• Calcium

• Magnesium

• Water

• Salt

Why do plants need nitrate ions?

• For denitrification as part of the nitrogen cycle

• For making amino acids

• To absorb sunlight for photosynthesis

• To regulate the opening and closing of the stomata

Which of the following if deficient results in purple leaves?

• nitrates

• magnesium

• potassium

• phosphorus

Choose all that apply: Water is necessary for plants for the following reasons:

• keep plants firm and upright

• transport of mineral salts

• encourage evaporation in the plant

• keeping the plant cool

• necessary for photosynthesis

What does the xylem transport in a plant?

• Water and dissolved sugars

• Water and dissolved mineral salts

• Water and carbon dioxide

• Water only

In which order does water pass through the cells of a plant, as the water travels from the roots to a leaf?

• mesophyll cells → root hair → root cortex → xylem

• root cortex → root hair → xylem → mesophyll cells

• root hair → mesophyll cells → root cortex → xylem

• root hair → root cortex → xylem → mesophyll cells

Which of the following processes are involved in the loss of water from the leaves of plant?

• Diffusion

• Osmosis

• Condensation

• Transpiration

  Fill in the blanks: When a plant __________ water by transpiration, this creates a pulling force that carries water and dissolved salts toward the____________  of the plant.

• gains, top

• loses, top

• gains, bottom

• loses, bottom