science week quiz yr 10

Water and minerals move in which direction within the plant

• Upward

• Down

The plant tissue that carries food materials DOWNWARD from the leaves to the rest of the pant is the ______.

• Phloem
• Stomata
• Chlorophyll
• Xylem

How do water enter the roots from the soil?

• diffusion
• osmosis
• transpiration
• active transport

Transpiration is

• the movement of water through a plant from the roots up the stem
• the loss of water from the leaves of a plant by the process of evaporation
• the flow of water into plant roots by osmosis from the soil
• the process of minerals and sugars moving through plant veins

what is the function of root hair?

• it is place to store the food
• it has large surface area to absorb more water

Plaster of Paris is made from

• Lime stone
• Slaked Lime
• Quick lime
• Gypsum

Washing soda has the formula

• Na2CO3.7H2O
• Na2CO3.10H2O
• Na2CO3.H2)
• Na2CO3

BASE + ACID ----> SALT +?

• water
• oxygen
• hydrogen ion
• hydroxide ion

What is the name of this ion: H₃O⁺?

• helium ion
• hydrogen ion
• hepatic ion
• hydronium ion

A drop of solution 'X' is placed on a strip of pH paper. A deep red colour is produced. The solution 'X' is

• NaOH

• HCl

• H₂O

• Na₂CO₃