Plant Defence Responses

Question 1

What are the three different types of plant defence responses againts diseases?

Answer 1

1. Mechanical
2. Physical
3. Chemical

3,3,2

Question 2

What are the three different mechanical defence responses against disease?

Answer 2

1. Mimicry
2. Thorns or hairs
3. Curling or drooping

Question 3

Is mimicry a mechanic,physical or chemical plant defence response?

Answer 3

Mechanical

Question 4

How does mimicry prevent plants from being eaten?

Answer 4

Mimicry tricks animals which deters animals from eating them

Question 5

Are thorns/hairs a mechanical, physical or chemical defence response?

Answer 5

Mechanical

Question 6

How do thorns/hairs prevent plants from being eaten by herbivores

Answer 6

They harm herbivores and so prevent plants from being eaten

Question 7

Is the curling/droopingof leaves a mechanical, physical or chemical plant defence response?

Answer 7

Mechanical

Question 8

How does the curling/drooping of leaves prevent plants from being eaten?

Answer 8

It scares the herbivore as they are not used to thisand it looks unhealthy

Question 9

Name the three physical defence responses

Answer 9

1. Cellulose cell walls
2. Waxy cuticles
3. Layers of dead cells (bark)

Question 10

Are cellulose cell walls a mechanical, physical or chemical defence response?

Answer 10

Physical

Question 10

How does the waxy cuticle on plant leavesdefend against plant disease

Answer 10

It stops microorganisms from penetrating and attacking the cell

Question 10

How does the cellulose cell walls defend against plant disease

Answer 10

They stop microorganisms from penetrating and attacking the plant

Question 10

Is the waxy cuticle on plant leaves a mechanical, physical or chemical plant defence response?

Answer 10

Phyisical

Question 10

Is bark a mechanical, physical or chemical plant defence response?

Answer 10

Physical

Question 11

How do layer of dead cells (bark) on trees defend against plant disease?

Answer 11

They prevent microorganisms from penetrating and attacking the cell

Question 12

Name the two different types of chemical defence responses?

Answer 12

1. Secreting antibacterial chemical
2. Secreting poison

Question 13

Is secreting antibacterial chemicals a mechanical, physical or chemical response?

Answer 13

Chemical

Question 14

How does secreting antibacterial chemicals help a plant?

Answer 14

It kills infectious bacteria and stops them from attacking plants

Question 15

Is secreting poisons a mechanical, physical or chemical plant defense response?

Answer 15

Chemical

Question 16

How does secreting poisons help a plant

Answer 16

It makes herbivores unwell and so deters herbivores from eating the plant