Question

types of activity cambium ring​

Answer 1

Answer:

There are several distinct kinds of cambium found in plant stems and roots:

Cork cambium, a tissue found in many vascular plants as part of the periderm.

Unifacial cambium, which ultimately produces cells to the interior of its cylinder.

Vascular cambium, a lateral meristem in the vascular tissue of plants.

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Answer 2

The cambial ring becomes active and begins to cut off new cells, both to-wards the inner and outer sides. The cells cut off to-wards the outer side get differentiated into the secondarily phloem. The cells to-wards the inner side get differentiated into the secondary xylem.

The secondary phloem consists of sieve-tubes, companion cells, phloem parenchyma and often patches of bast fibers. Many of the textile fibers of commerce such as jute, hemp, flax etc. are the bast fibers of secondary phloem.

The secondary xylem consists of scalar form and pitted vessels, tracheids, wood fibers and wood parenchyma.

The cambium is always more active on the inner side than on the outer. As I result, the xylem increases more rapidly than the phloem and soon forms a hard compact mass.

This forms the main bulk of the plant body. Due to the continued formation of secondary xylem, both the primary and secondary phloem of the earliest years gets gradually crushed.

At places, cambium forms some narrow bands of parenchyma which pass through secondary phloem and the secondary xylem. These are the secondary modularly rays.

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