Spring Term Test 2023 | Plants

Question 1

What is the word equation for photosynthesis?

Answer 1

Carbon Dioxide + Water —–> Oxygen + Glucose
light

Question 2

How does photosynthesis occur?

Answer 2

In the palisade layer of the leaf, there are chloroplasts that contain chlorophyll. Chlorophyll uses energy from the Sun to change C02 and water into glucose and Oxygen

Question 3

How is C02 and Water taken up by plants. Wt

Answer 3

Water - Taken up by roots in the ground then transported through the xylem tubes
C02 - Taken in though tiny holes on the underside of the leaf, with C02 diffusing in and Oxygen diffusing out

Question 4

Label and know main adaptations of a leaf

Answer 4

Waxy Cuticle - A water repellent layer to protect the leaf and reduce water loss
Palisade Layer - Contains chloroplasts to keep in light
Spongey Layer - Has air space for gas exchange
Lower Epidermal Layer - Contains stomate controlled by guard cells which allow gases in/out of the leaf.
Vascular Bundle - Two parts - Xylem transports water, Pholem transports sugar.
Upper epidermal layer - thin clear layer to let light in.

Question 5

How do plants exchange gases via the stomata?

Answer 5

Tiny holes on the bottom of the leaf are called stomata - they diffuse gases in and out of the plant. Stomate are controlled by guard cells. They open the stomata at day and close them at night.

Question 6

What minerals do plants need and what happenes to a plant is they lack it?

Answer 6

Nitrate - Amino Acids/Protein/Growth
(def.) Yellow Leaves/Poor Growth
Phosphate - Healthy Roots
(def.) Purple Leaves/Poor root growth
Potassium - Healthy leaves/flowers
(def.) Yellow leaves, dead patches
Magnesium - Making chlorophyll
(def.) Yellow Leaves

Question 7

What are the main adaptations for a xerophyte?

Answer 7

Xero: Deep roots, needs little water, thick waxy cuticle to limit evaporation.

Question 8

What are the main adaptations for a hydrophyte?

Answer 8

Hydro: Light leaves with air inside, thin waxy cuticle.

Question 9

How to complete a good biological drawing

Answer 9

Continous line, no shading, label, draw what you see

Question 10

What does C.O.R.M.S stand for?

Answer 10

C - Change
O - Organism
R - Repeat
M - Measure
S - Same

Question 11

How do you draw a good graph?

Answer 11

Use ruler, Title (main/x/y), Units, Continous data = line, discontinous data = bar
SLAAP
S - Scale
L - Line
A - Axes
A - Axes (units)
P - Points
Independant variable goes on the x - axis, dependant variable (one you measured) goes on the y - axis

Question 12

Whats the difference between reliablilty and validity?

Answer 12

R - How consistent the results are (can they perform the same again)
V - Accuracy (weather they show what they are meant to show)

Question 13

Whats the difference between reliablilty and validity?

Answer 13

R - How consistent the results are (can they perform the same again)
V - Accuracy (weather they show what they are meant to show)