plant disease Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

How to notice plant disease

A

rot

Discolouration

malformed stem

spots

pests

stunted growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

how do plants get ill

A

infected bu pathogens/bacteria/fungus/insects

minerals ions deficiency

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do work out problem

A

use books

Google

Lab testing

Testing kit with immobilised monoclonal antibodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

insect damage

A

aphids/greenfly/blackfly/plant ice

symptoms:
poor distorted growth
Sticky honeydew
Sooty mould

Mostly active during spring to summer on gardens
All time indoors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Mechanical adaptations

A

leaves curl when touched

Thorns and hairs deter animals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

chemical response

A

posion deters herbivores
cause death / vomit /infection
Contains antibacterial chemicals
which used to make medicine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

physical defense

A

layers of dead cells around stem - which fall off removing pathogens

Fungus on plants surface

Tough waxy cuticle prevents pathogens entering epidermal tissue

Cellulose wall

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

mimicry

A

disgiuse from being eaten / damage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Flower

A

sexual reproduction contains bith male and female parts

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

leaf

A

Photosynthesis takes place

Cells contain chloroplast which have chlorophyll

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

roots

A

anchorage

water moves by osmosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

root hair cell

A

has adaptations which allows water to be taken in

Thin long hairs

large sa - easy diffusion

Thin wall - reduces diffusion distance

Large vacuole - large cell sap keeps water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Osmosis

A
movement of water molecules 
from area of high to low concentration 
down concentration gradient until equilibrium 
passive process - no energy required 
through semi permeable membrane
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

movement of minerals

A
by diffusion 
mineral concentration is higher in soil than in root hair cell 
equilibrium 
more minerals are taken in 
active transport takes over 
mineral ion from low concentration to high concentration 
against concentration gradient
energy used
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

less Magnesium

A

production of chlorophyll is reduced

bot enough chlorophyll for light absorption

yellow discolouration due to lack of pigments

Lack of photosynthesis =less sugars/glucose
less sugar- less energy for respiration for metabolic process

Cannot join with nitrate to make proteins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

less nitrates

A

needed to make proteins needed for growth

Limited = stunted growth/ reduced growth

Cannot replace / repair damaged cells and tissues