Class 11 Biology - Chapter Photosynthesis in Higher Plants NCERT Solutions | By looking at which internal structure o
Welcome to the NCERT Solutions for Class 11th Biology - Chapter Photosynthesis in Higher Plants. This page offers a step-by-step solution to the specific question from Excercise ".$ex_no." , Question 2: by looking at which internal structure of a plant....
Question 2
By looking at which internal structure of a plant can you tell whether a plant is C3 or C4? Explain.
Answer
The leaves of C4 plants have a special anatomy called Kranz anatomy. This makes them different from C3 plants. Special cells, known as bundle-sheath cells, surround the vascular bundles. These cells have a large number of chloroplasts. They are thick-walled and have no intercellular spaces. They are also impervious to gaseous exchange. All these anatomical features help prevent photorespiration in C4 plants, thereby increasing their ability to photosynthesise.
More Questions From Class 11 Biology - Chapter Photosynthasis in Higher Plants
- Q:- Figure 13.10 shows the effect of light on the rate of photosynthesis. Based on the graph, answer the following questions:
(a) At which point/s (A, B or C) in the curve is light a limiting factor?
(b) What could be the limiting factor/s in region A?
(c) What do C and D represent on the curve?
- Q:- By looking at a plant externally can you tell whether a plant is C3 or C4? Why and how?
- Q:- Even though a very few cells in a C4 plant carry out the biosynthetic Calvin pathway, yet they are highly productive. Can you discuss why?
- Q:- Give comparison between the following:
(a) C3 and C4 pathways
(b) Cyclic and non-cyclic photophosphorylation
(c) Anatomy of leaf in C3 and C4 plants - Q:- 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?
- Q:- 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?
- Q:- RuBisCo is an enzyme that acts both as a carboxylase and oxygenase. Why do you think RuBisCo carries out more carboxylation in C4plants?
- Q:- Why is the colour of a leaf kept in the dark frequently yellow, or pale green? Which pigment do you think is more stable?
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7 Comment(s) on this Question
puneet dhaliwal
2020-03-04 12:11:02
thanks a lot
Atul Singh
2019-12-13 19:14:15
Thanks a lot
Anshika
2019-11-24 19:11:38
Thanks
Akash singh
2019-10-14 21:31:06
Thanks for the answer
d
2019-03-28 15:39:55
sUPERB!!!!!!
ATHARV JAGTAP
2019-01-27 21:39:54
It is only c4 not c3
Anushka kaur
2018-12-18 21:44:39
Thanks a lot
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