For Test Flashcards
What is the vein used for
Transport system
What is the stoma
The gap in between the guard cell that allows co2 to diffuse inside the leaf
What layer is the tall thin layer?
The palisade layer
What layer is the guard cell on
Lower epidermis
What is the lowest layer
Lower epidermis
What is the waxy cuticle used for
To prevent burning from the sun
Which layer has a lot of chlorophyll
The palisade layer
What is the air space used for
Allows the co2 to get to the palisade and the oxygen to diffuse
What is in between the waxy cuticle and the palisade layer
The upper epidermis
Word equation for photosynthesis
CO2 and water ———————-> o2 and glucose
Why are leaves green
Because chlorophyll is green, and chlorophyll allows photosynthesis
How does water get into a plant
Through the roots
Why is the upper epidermis transparent
So then the sunlight can get to the palisade
What shape is the guard cells
Banana
What happens if a plant loses too much water
It starts wilting
How can we see that a leaf is photosynthesising STEP 1
Boil leaf in water to soften it and kill cells
How can we see if a leaf is photosynthesising STEP 2
Boil leaf in ethanol to break down chlorophyll
Uses of glucose
Respiration, lipids, starch, portier, cellulose
How can we see if a leaf is photosynthesising STEP 3
Rinse leaf in water to remove ethanol
How can we see if a leaf is photosynthesising STEP 4
Test with iodine (any blue part obtained starch
What goes into the plant - co2 or oxygen
Co2
Things in a root hair cell
Nucleus, vacuole, cytoplasm, cell wall, cell membrane
Why do root hair have a large surface area
So they can absorb more water
What gives the cell strength and support
Cell wall
What does a vacuole do
Contains cell sap to provide support for the cell
Three factors that affect photosynthesis
Temperature, light intensity and carbon concentration
How do you test for the presence of oxygen
Put a glowing splint into a tube of oxygen. Oxygen re lights the glowing splint but co2 does not relight it
Role of nitrate in plants
Involved in plant metabolism, growth, development and adaptation
Deficiency symptoms of nitrate
the leaves turn pale green or yellow
Role of phosphorus
Essential for cell division and development of growing tip
Deficiency of phosphorus
Slow growth and yellow foilage
Role of potassium in plants
Associated of movement of water, nutrients and carbs in the plant tissue
Potassium deficiency symptoms
Yellow leaves with dead patches
Magnesium role in plants
Making chlorophyll
Magnesium deficiency symptoms
Plant turns Yellow
What is meant by fertiliser
A substance added to soil to increase fertility
Why do farmers use fertiliser
Make crops as healthy as possible
