UPSC CAPF (AC) 2024 Paper I · Question 23

Question 23 of the UPSC CAPF (AC) 2024 Paper I (4 August 2024). Try it first, then open the answer and explanation.

1. CAPF 2024 · P-I · Q23 · General Science · Biology

   In which layer of the plant tissue Guard cells are present?

   1. Palisade mesophyll
   2. Spongy mesophyll
   3. Epidermis
   4. Xylem

   पादप ऊतक की किस परत में द्वार-कोशिका (गार्ड सेल) विद्यमान होते हैं?

   1. खंभ पर्णमध्योतक (पैलीसेड मेसोफ़िल)
   2. स्पंजी पर्णमध्योतक (स्पंजी मेसोफ़िल)
   3. अधिचर्म (एपिडर्मिस)
   4. दारु (जाइलम)
   Show answer

   Answer: (3) Epidermis

   उत्तर: (3) अधिचर्म (एपिडर्मिस)

   Guard cells are specialised cells of the epidermis that surround each stomatal pore and open or close it; unlike other epidermal cells they contain chloroplasts. Palisade and spongy mesophyll are the inner photosynthetic tissues of the leaf, and xylem is vascular tissue.

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