13. Photosynthesis in Higher Plants

13. Photosynthesis in Higher Plants

13 Maths Exercise Solutions

By looking at a plant externally can you tell whether a plant is or ? Why and how?

13.10 Factors Affecting Photosynthesis, Question No.1
By looking at a plant externally can you tell whether a plant is or ? Why and how?

By looking at which internal structure of a plant can you tell whether a plant is  or ? Explain.

13.10 Factors Affecting Photosynthesis, Question No.2
By looking at which internal structure of a plant can you tell whether a plant is  or ? Explain.

Even though a very few cells in a plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?

13.10 Factors Affecting Photosynthesis, Question No.3
Even though a very few cells in a plant carry out the biosynthetic – Calvin pathway, yet they are highly productive. Can you discuss why?

RuBisCO is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCO carries out more carboxylation in plants?

13.10 Factors Affecting Photosynthesis, Question No.4
RuBisCO is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCO carries out more carboxylation in plants?

Suppose there were plants that had a high concentration of Chlorophyll b, but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?

13.10 Factors Affecting Photosynthesis, Question No.5
Suppose there were plants that had a high concentration of Chlorophyll b, but lacked chlorophyll a, would it carry out photosynthesis? Then why do plants have chlorophyll b and other accessory pigments?

Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?

13.10 Factors Affecting Photosynthesis, Question No.6
Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?

Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?

13.10 Factors Affecting Photosynthesis, Question No.7
Look at leaves of the same plant on the shady side and compare it with the leaves on the sunny side. Or, compare the potted plants kept in the sunlight with those in the shade. Which of them has leaves that are darker green? Why?

Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
What do C and D represent on the curve?    

13.10 Factors Affecting Photosynthesis, Question No.8
Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
What do C and D represent on the curve?    

Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
At which point/s (A, B or C) in the curve is light a limiting factor?    

13.10 Factors Affecting Photosynthesis, Question No.9
Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
At which point/s (A, B or C) in the curve is light a limiting factor?    

Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
What could be the limiting factor/s in region A?
    

13.10 Factors Affecting Photosynthesis, Question No.10
Figure shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
What could be the limiting factor/s in region A?