Label the picture from the upper to the lower part of the leaf.
Cuticle, upper epidermis, palisade mesophyll, spongy mesophyll, stomata, lower epidermis and cuticle.
Vascular bundles are made up of _______ and _______.
xylem - phloem
As the amount of carbon dioxide increases, the rate of photosynthesis _____.
increases
Define Photosynthesis
Photosynthesis: the process by which plants manufacture carbohydrates from raw materials (water and CO2) using energy from light.
The 3 limiting factors that affect the rate of TRANSPIRATION are temperature, humidity and light intensity.
True or false?
True
The palisade cells contain much more chloroplasts than the spongy cells from the mesophyll.
True or false?
True
If the sun shines on the right side of a plant’s shoot, auxins will accumulate on the ______ side.
dark opposite left
Define Phototropism.
Phototropism is a response in which a plant grows towards (positive) or away (negative) from the direction from which light is coming.
How do you call the vessel that transports nutrients?
Phloem
Transpiration is the _______ of water at surfaces of the mesophyll cells followed by loss of water vapour from plant leaves, through _______.
evaporation - stomata.
How do you call a response in which a plant grows towards (positive) or away (negative) from gravity?
Gravitropism or Geotropism.
As temperature increases, the rate of photosynthesis _____ until it reaches optimum temperature 40°C.
increases
Name the equation for photosynthesis.
water + carbon dioxide ---> glucose + oxyigen
Where would you write the light and chlorophyll?
Define TRANSLOCATION.
Movement of sucrose and amino acids in phloem; from regions of production (sources) to regions of storage or to regions of utilization in respiration or growth
The image represents xylem and phloem in the different transverse sections of the plant. Can you tell which drawing corresponds to the leaf and which one to the stem?
Upright: stem, down: leaf
What are the 2 main minerals needed by plants?
Nitrogen and Magnesium
"Chlorophyll is a green pigment that traps light. It can be found inside the chloroplasts"
True or false?
True
How do you call the waxy layer that prevents water loss from the top of the leaf?
Cuticle
Where are auxins produced?
Auxins are produced in the tips of roots and shoots of plants.
How do you call the vessel that transports water and dissolved minerals and has lignified walls made of cellulose?
Xylem
The 3 limiting factors of Photosynthesis are light intensity, carbon dioxide concentration, and temperature.
True or false?
True
As the amount of light increases, the rate of photosynthesis ____.
increases
What are AUXINS?
Auxins are plant hormones or growth substances.
What is responsible for Translocation in plants, the xylem or the phloem?
The phloem.