Companion cells, specialized parenchymatous cells, are connected to sieve tube elements via pit fields and help maintain the pressure gradient within sieve tubes.
The companion cells are specialised {{c1::parenchymatous}} cells, which<br>are closely associated with sieve tube elements. The sieve tube elements<br>and companion cells are connected by {{c1::pit fields}} present between their<br>common {{c1::longitudinal}} walls. The companion cells help in maintaining the<br>{{c2::pressure gradient}} in the sieve tubes.
| Text | The companion cells are specialised parenchymatous cells, which are closely associated with sieve tube elements. The sieve tube elements and companion cells are connected by pit fields present between their common longitudinal walls. The companion cells help in maintaining the pressure gradient in the sieve tubes. |
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Tags: neet-biology::unit-2::anatomy-of-flowering-plants
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