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CBSE Class 10 Sample Paper Science Solution - For 2023 Boards

Class 10
Solutions to CBSE Sample Paper - Science Class 10

In the given transverse section of the leaf identify the layer of cells where maximum photosynthesis occurs.

Question 8 - In the given transverse section - teachoo.jpg

  1.  I, II
  2.  II, III
  3.  III, IV
  4.  I, IV




  1. Upper Epidermis
  2. Palisade Layer
  3. Spongy Cell
  4. Guard Cells
  • The Upper Epidermis contains a waxy layer and a single layer of cells that covers the epidermal layer of cells. It aids in water conservation
  • The palisade layer contains chloroplasts and is the primary layer where photosynthesis takes place
  • The third layer is made of spongy cells . It is part of the mesophyll layer . It allows for the exchange of gases necessary for photosynthesis .
  • Guard cells are special types of cells that facilitate the exchange of gases in leaves. 

Therefore, the II and III layers play an important part in photosynthesis, and that is where the majority of the process takes place .

Cross Section of Leaf - Teachoo.jpg

So, the correct answer is (b) II,III

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo