{"id":86722,"date":"2025-06-01T04:19:26","date_gmt":"2025-06-01T04:19:26","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=86722"},"modified":"2025-06-01T04:19:26","modified_gmt":"2025-06-01T04:19:26","slug":"which-one-of-the-following-provides-buoyancy-to-aquatic-plants-to-help","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/which-one-of-the-following-provides-buoyancy-to-aquatic-plants-to-help\/","title":{"rendered":"Which one of the following provides buoyancy to aquatic plants to help"},"content":{"rendered":"

Which one of the following provides buoyancy to aquatic plants to help them float?<\/p>\n

[amp_mcq option1=”Aerenchyma” option2=”Tracheid” option3=”Guard cell” option4=”Sclerenchyma” correct=”option1″]<\/p>\n

\n
\n
This question was previously asked in<\/div>\n
UPSC Geoscientist – 2020<\/div>\n<\/div>\n
Download PDF<\/a>Attempt Online<\/a><\/div>\n<\/div>\n
\nAerenchyma provides buoyancy to aquatic plants.
\n<\/section>\n
\nAerenchyma is a modified parenchyma tissue found in many aquatic and wetland plants. It contains large air spaces (lacunae) that provide buoyancy, allowing the plant to float on the water surface. These air spaces also facilitate gas exchange (oxygen and carbon dioxide) to submerged tissues.
\n<\/section>\n
\nTracheids are components of xylem involved in water transport and support. Guard cells surround stomata and regulate gas exchange but are not involved in buoyancy. Sclerenchyma provides mechanical support and strength due to its thick, lignified cell walls. Only aerenchyma is specifically adapted for providing buoyancy through its air-filled cavities.
\n<\/section>\n","protected":false},"excerpt":{"rendered":"

Which one of the following provides buoyancy to aquatic plants to help them float? [amp_mcq option1=”Aerenchyma” option2=”Tracheid” option3=”Guard cell” option4=”Sclerenchyma” correct=”option1″] This question was previously asked in UPSC Geoscientist – 2020 Download PDFAttempt Online Aerenchyma provides buoyancy to aquatic plants. Aerenchyma is a modified parenchyma tissue found in many aquatic and wetland plants. It contains … <\/p>\n

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