The transport of water and minerals primarily occurs through which part of a plant?
The transport of water and minerals primarily occurs through which part of a plant?
जल और खनिजों का परिवहन मुख्य रूप से पौधे के किस भाग के माध्यम से होता है?
Detailed Solution & Logic
Xylem / जाइलम
📘 Explanation / व्याख्या:
The transport of water and minerals in plants mainly takes place through the xylem tissue. Xylem is a specialized vascular tissue responsible for carrying water and dissolved minerals absorbed by the roots from the soil to the stem, leaves, and other parts of the plant.
The upward movement of water in xylem occurs due to:
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Transpiration pull (evaporation of water from leaves creates suction)
-
Root pressure
-
Capillary action
This movement is mostly unidirectional (upward).
पौधों में जल और खनिजों का परिवहन मुख्य रूप से जाइलम (Xylem) के माध्यम से होता है। जाइलम एक विशेष संवहनी ऊतक (Vascular Tissue) है, जो जड़ों द्वारा अवशोषित जल और घुले हुए खनिजों को तने, पत्तियों और अन्य भागों तक पहुंचाता है।
जल का ऊपर की ओर संचलन मुख्यतः निम्न कारणों से होता है:
-
वाष्पोत्सर्जन खिंचाव (Transpiration Pull)
-
मूल दाब (Root Pressure)
-
केशिकत्व (Capillary Action)
यह प्रवाह सामान्यतः एक दिशा (नीचे से ऊपर) में होता है।
🌟 Extra Facts / अतिरिक्त तथ्य:
1️⃣ Structure of Xylem / जाइलम की संरचना
Xylem is made up of four types of cells:
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Tracheids
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Vessels
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Xylem fibres
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Xylem parenchyma
जाइलम चार प्रकार की कोशिकाओं से मिलकर बना होता है — ट्रेकिड्स, वेसल्स, फाइबर्स और पैरेंकाइमा।
2️⃣ Comparison with Phloem / फ्लोएम से तुलना
-
Phloem transports food (prepared in leaves) to other parts of the plant.
-
Phloem transport is bidirectional.
-
फ्लोएम पत्तियों में बने भोजन को पौधे के अन्य भागों तक पहुँचाता है और इसका प्रवाह दो दिशाओं में हो सकता है।
3️⃣ Role of Stomata / रंध्र का कार्य
-
Stomata help in gas exchange and transpiration, not in water transport.
-
रंध्र गैसों के आदान-प्रदान और वाष्पोत्सर्जन में सहायक होते हैं, परिवहन में नहीं।
4️⃣ Importance in Plants / पौधों में महत्व
-
Without xylem, plants cannot maintain turgidity (upright position).
-
Large trees (like banyan, teak) survive because of efficient xylem transport.
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जाइलम के बिना पौधे सीधे खड़े नहीं रह सकते।
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