Mineral Salts And Transporting Food

Question 1

Plants need mineral _____ or _____. For instance, _____ are needed to make proteins.

Answer 1

Salts
Nutrients
Nitrates

Question 2

There is a _____ solution of these salts in the water in the soil. Often salts are taken up even though there are _____ in the soil than are in the root.

Answer 2

Weak

Less

Question 3

How are salts taken up?

Answer 3

By active transport. Active transport can collect salts against a concentration gradient. This needs energy from respiration.

Question 4

Why do root hairs give a large surface area?

Answer 4

For taking up mineral salts

Question 5

There are many air spaces in the ______. ________ passes from this air into the root hair too.

Answer 5

Soil

Oxygen

Question 6

How are mineral salts carried up to the leaves?

Answer 6

With water in xylem vessels

Question 7

What is active transport?

Answer 7

Uptake of molecules or ions, against a concentration gradient, using energy from respiration.

Question 8

What are the soluble products of the food made in photosynthesis?

Answer 8

Sugars
Amino acids
Fatty acids

Question 9

These soluble food products are carried to all parts of the plant in solution in the ______. This is often called ______.

Answer 9

Phloem

Translocation

Question 10

Xylem are _____ tubes but phloem is ____ tissue.

Answer 10

Dead

Living

Question 11

How do substances move in the phloem?

Answer 11

Active transport

Question 12

The plant cells have to use energy to move the ______ substances along.

Answer 12

Dissolved

Question 13

Where does food in a plant end up?(5)

Answer 13

• sugars are changed into starch and stored in the root cortex and in seeds
• sugars also form cellulose for new cell walls at the growing root tip and shoot tip
• sugars are also transported to the fruits.
• amino acids make proteins needed to make new cells
• fatty acids form fats that are stored in many seeds