Auxin

Past paper questions (write the question and your answer)

1) Explain why, on a hot day, less water is lost in urine (2)

2) Explain how the glucose content of the blood can be decreased by insulin (2)

3) People with Type 1 diabetes cannot produce the hormone needed to control the glucose content of the blood.

Explain how a Type 1 diabetic can control the glucose content of the blood. (3)

4) Suggest why people with a high BMI may develop Type 2 diabetes. (2)

5) Blood glucose levels also need to be controlled.

Describe how type 1 diabetes and type 2 diabetes are controlled. (6)

6) Explain what happened to the cells in the root of seedling A to cause the

change in direction of growth. (3)

HORMONES

Uses of plant hormones

Controlling ripening

rooting powders

herbicides

How it works

You need to know:

definition for hormone

How they travel around the body

Role, target organ and where produced for insulin, glucagon, and ADH (water regulation)

Types of diabetes

Mechanism for plant tropisms

Phototropism

Auxin makes the shoot cells grow more.

Auxin

What do we call plants growing towards the sun?

How does auxin affect roots and shoots differently?

Draw both of these and label them as a root or shoot.

Shaded area is high in auxin