Question

what are phanerogams?​

Answer 1

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Phanerogams are flowering or seed-bearing plants. They are the most advanced plants. They possess well-developed roots, stems, leaves and flowers.

Phanerogams are divided into two main groups:

Gymnosperms (naked-seed plants)

Angiosperms (closed-seeded plants)

Answer 2

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Companion cells are present in angiosperms. Most gymnosperms lack vessels, but exceptions occur, such as an Gnetales.