Y12 Water and minerals

Why do plants need water?

• For hydration and temperature regulation

• For photosynthesis and transport of minerals

• For respiration and transporting oxygen

• For lubrication and and protection

What are the symptoms of lack of calcium ions in plants?

• Growing points die, yellowing of leaves, yellowing of veins

• Growing points die, yellowing of leaves, leaves become crinkly

• Growing points die, yellow leaves stay yellow, yellow spots appear

• Crinkly leaves, and yellow spots

How does water support the structure of the plant?

• They combine with carbon dioxide and oxygen to produce glucose which by osmosis fill the roots with water.

• Fills the xylem and phloem vessels.

• Water builds up by osmosis which forces the cytoplasm against the cell walls, making them rigid.

• Water transports mineral ions which is needed for growth.

• A

• B

• C

• D

Which of the following is the purpose of nitrate in plants?

• Help in the transportation of other minerals around the plants.

• Make amino acids, proteins, hormones and DNA in plant cells.

• To provide the green pigment (chlorophyll) and activate some plant enzymes.

• Combine with pectin to hold plant cells together.

Apart from producing chlorophyll and synthesizing nucleic acids, what is another use of magnesium?

• The activation of some plant enzymes.

• Produce plant hormones

• To make ADP and ATP

• For the formation of magnesium pectate for the middle lamella between two cell walls in plants

In the xylem vessels, mineral ions are transported around the plant by ______. In the phloem, sugars are transported around the plant by ______.

• Osmosis, active transport .

• Transpiration, osmosis.

• Active transport, transpiration.

• Transpiration, active transport.

Transpiration is regulated by the movements of.....?

• Parenchyma cells

• Guard cells

• Epithelial cells

• Protoxylem

What term is used meaning the use of plants to toxic metals from the soil?

What is sugar needed for in plants?

• Respiration

• Facilitate the transport of minerals

• Building new materials

• Facilitate the transport of water