An aphid's stylet, when piercing plant tissue to reach the phloem, would pass sequentially through the epidermis, mesophyll, companion cell, and finally into the phloem sieve tube.
An aphid's stylet, when piercing plant tissue to reach the phloem, would pass sequentially through the epidermis, mesophyll, companion cell, and finally into the phloem sieve tube.
| Front | the succesion of layers pierced by aphid stylet |
|---|---|
| Back | epidermis -> mesophyll -> companion cell -> phloem |
Tags: 9_2_phloem_transport
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