WorksheetsCoordination in plants
Total questions: 21
Worksheet time: 12mins
What is a phototropism?
A response to light
A response to gravity
A response to temperature
What is a geotropism?
A response to light
A response to gravity
A response to temperature
What is positive phototropism
Shoot of the plant moves/bent towards the light
The plant moves/bent towards the light
Shoot of the plant moves towards gravity
Shoot of the plant moves/bent away from the light
What is positive geotropism
Shoot of the plant moves/bent towards gravity
Shoot of the plant moves/bent away from gravity
The plant moves/bent towards gravity
Shoot of the plant moves/bent towards light
What is a negative phototropism
The plant moves/bent away from gravity
Shoot of the plant moves/bent towards the light
Shoot of the plant moves/bent away from the light
The plant moves/bent away from the light
What is negative geotropism
Shoot of the plant moves/bent away from the light
The plant moves/bent away from gravity
Shoot of the plant moves/bent towards gravity
Shoot of the plant moves/bent away from gravity
What is tropism?
The growth response of a plant to a directional stimulus
The direction of light that falls on plant
Response depending in change of growth
Which response is a result of geotropism?
flowers being produced
roots growing downwards
growing bigger leaves
seeds germinating
Which statement about plant stems is correct?
They are positively phototropic and positively geotropic
They are negatively phototropic but positively geotropic
They are positively phototropic but negatively geotropic
Which statement about plant roots is correct?
They are negatively phototropic and negatively geotropic
They are negatively phototropic but positively geotropic
They are positively phototropic but negatively geotropic
Which statement about auxins is correct?
Can travel from one part of the plant to another
They are only involved in responses to light
They are only involved in responses to gravity
Where are auxins made in the plant?
In the growing tip of a stem or root where it diffuses down
In the older part of a stem or root
All plant cells can make auxins
Which side of a stem contains more auxin?
The shaded side
The side in the light
Both sides (shaded and non-shaded) contain the same amount of auxin
What happens when a root bends in the direction of the force of gravity?
The top side grows more than the bottom side
The bottom side grows more than the top side
The top and bottom sides grow at the same rate
What are the tropism stimuli that act on a plant?
(a)
Advantage of phototropism
Helps increase photosynthesis to get maximum light exposure
to get better access to the light they need to grow
allows plants to compete for the limited resources available
creates structural anchorage and integrity of the plant
Advantage of geotropism
creates structural anchorage and integrity of the plant
allows plants to compete for the limited resources available in their immediate environment
to get better access to the light they need to grow
ensures that crop shoots resume upward growth after prostration by the action of wind and rain
Which diagram shows the likely result after one day?
What is celioptile?
(a)
What type of material can auxin pass through
water soluble chemicals
impermeable to water
gelatin
mics (mineral)
Movement of auxin is though to take place by which of the following method?
diffusion
active transport
osmosis
mass flow in problem
