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Edexcel Biology Paper 2 Exam Questions
With Verified Answers
What is the symbol equation for photosynthesis - Answers✔6CO2 + 6H2O -> C6H12O6 + 6O2
What is photosynthesis used for? - Answers✔Using energy from the sun to make glucose
Where does photosynthesis occur? - Answers✔Chloroplast- in the chlorophyll
What are the limiting factors of photosynthesis? - Answers✔Light , carbon dioxide levels,
temperature , amount of chlorophyll
Why/how light a limiting factor? - Answers✔Light transfers the energy needed for
photosynthesis. At first, as the light level is raised, the rate of photosynthesis increases steadily
but only true to a certain point when there becomes a different limiting factor
Why/how is carbon dioxide a limiting factor of photosynthesis? - Answers✔CO2 is one of the
raw materials in photosynthesis. As concentration of CO2 increases, so does the rate of
photosynthesis but to a certain point where there becomes another limiting factor.
Why/how is temperature a limiting factor of photosynthesis? - Answers✔Photosynthesis requires
enzymes which as temperature increasing, so does their speed but after their optimum
temperature they begin to denature so they work slower
What is a root hair cell? - Answers✔Cells on the surface of a plant roots that grow into "hairs"
which stick into the soil to absorb water and minerals
How is a root hair cell adapted for its function? - Answers✔Large surface area to absorb water
and mineral ions.
What is a phloem? - Answers✔The phloem is a tube made from column of elongated living cells
with small pores in the end walls to allow stuff to flow through. They transfer food substances
(sucrose) from the leaves to other parts of the plant.
What is the xylem? - Answers✔Made of dead cells joined end to end with no end walls.
Strengthened with lignin and carry water and mineral ions from roots to stem and leaves.
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ALL RIGHTS RESERVED.
Edexcel Biology Paper 2 Exam Questions
With Verified Answers
What is the symbol equation for photosynthesis - Answers✔6CO2 + 6H2O -> C6H12O6 + 6O2
What is photosynthesis used for? - Answers✔Using energy from the sun to make glucose
Where does photosynthesis occur? - Answers✔Chloroplast- in the chlorophyll
What are the limiting factors of photosynthesis? - Answers✔Light , carbon dioxide levels,
temperature , amount of chlorophyll
Why/how light a limiting factor? - Answers✔Light transfers the energy needed for
photosynthesis. At first, as the light level is raised, the rate of photosynthesis increases steadily
but only true to a certain point when there becomes a different limiting factor
Why/how is carbon dioxide a limiting factor of photosynthesis? - Answers✔CO2 is one of the
raw materials in photosynthesis. As concentration of CO2 increases, so does the rate of
photosynthesis but to a certain point where there becomes another limiting factor.
Why/how is temperature a limiting factor of photosynthesis? - Answers✔Photosynthesis requires
enzymes which as temperature increasing, so does their speed but after their optimum
temperature they begin to denature so they work slower
What is a root hair cell? - Answers✔Cells on the surface of a plant roots that grow into "hairs"
which stick into the soil to absorb water and minerals
How is a root hair cell adapted for its function? - Answers✔Large surface area to absorb water
and mineral ions.
What is a phloem? - Answers✔The phloem is a tube made from column of elongated living cells
with small pores in the end walls to allow stuff to flow through. They transfer food substances
(sucrose) from the leaves to other parts of the plant.
What is the xylem? - Answers✔Made of dead cells joined end to end with no end walls.
Strengthened with lignin and carry water and mineral ions from roots to stem and leaves.
1
