Font size
WorksheetsPlants and Photosynthesis
Total questions: 20
Worksheet time: 21mins
Plants are:
Autotrophs
Heterotrophs
Carnivores
Herbivores
Tick the products of photosynthesis:
Glucose
Carbon dioxide
Water
Oxygen
Which is the correct word equation for photosynthesis?
Water + oxygen = glucose
Carbon dioxide + water = glucose
Carbon dioxide + water = glucose + oxygen
Water + glucose = carbon dioxide
Why is excess glucose stored as starch?
Clue: think in terms of water potential
What's the purpose of the airspaces in the spongy mesophyll?
To trap bacteria
To allow space to produce mucous
To make space for the xylem vessels
To allow easy diffusion of gases
What are the purposes of the upper epidermis?
traps light
secretes cuticle
photosynthesizes
protects inner layers of leaf
Describe the structure, function and arrangement of palisade mesophyll cells.
"Stomata" is the term used for the entire apparatus, including the guard cells.
True
False
Why is ethanol used in the process of testing leaves for starch?
To destroy the cell walls
To soften it
To decolorize it
To drain it of starch that is present
Iodine remains red-brown when there is no starch present.
True
False
"Place a black sheet of paper over a selected leaf."
This is an excerpt from an experiment written down by a student. It is an experiment to see whether (a) is necessary for photosynthesis.
Fill in the above blank.
Why do we destarch plants before any testing?
Which plant can we use for an experiment to see whether chlorophyll is necessary for photosynthesis?
Hydrilla
Croton
Duckweed
Elodea
Why do we use KOH to see whether carbon dioxide is necessary for photosynthesis or not?
In an experiment to see whether carbon dioxide is needed for photosynthesis, why do we apply grease to the neck of the bottle?
To prevent any air from exiting
To prevent any air from entering
To prevent carbon dioxide from entering
To prevent carbon dioxide from exiting
What is a limiting factor?
Tick two statements that are correct about guard cells.
They contain a number of chloroplasts
They contain no chloroplasts
They have thick outer walls and thin inner walls
They have thick inner walls and thin outer walls
Xylem vessels transfer water from the (a) to the leaves.
Write the chemical formula of glucose. Is glucose a monomer? Is it soluble in water? Where and how is excess glucose stored?
The chemical formula of oxygenic chlorophyll(chlorophyll A) is:
C18H30O50N42Mg38
C50H72O5N4Mg22
C55H72O5N4Mg
C55H72O5N4Mg20
