MasteryExams
General Science • BiologyMedium

Which plant tissue features sieve tube elements and companion cells as its primary functional components for transporting organic solutes?

A. Xylem
B. Phloem✓ Correct Answer
C. Collenchyma
D. Sclerenchyma

💡 Solution & Explanation

Phloem is the vascular plant tissue responsible for the translocation of sugars and organic nutrients synthesized during photosynthesis from source tissues to sink tissues. Sieve tube elements lack nuclei at maturity and depend on adjacent nucleated companion cells for metabolic support. Xylem tissue transports water and dissolved mineral ions unidirectionally from roots to leaves. Collenchyma and sclerenchyma provide mechanical support and structural rigidity to growing plant organs.

🚩 Report a problem