Question

10 unknown facts about Xylem, 10 unknown facts about Phloem.

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Answer 1

Answer:

Xylem

The xylem of a plant is the system of tubes and transport cells that circulates water and dissolved minerals. As a plant, you have roots to help you absorb water. If your leaves need water and they are 100 feet above the ground, it is time to put the xylem into action! Xylem is made of vessels that are connected end to end for the maximum speed to move water around. They also have a secondary function of support. When someone cuts an old tree down, they reveal a set of rings. Those rings are the remains of old xylem tissue, one ring for every year the tree was alive.

Phloem

In vascular plants, phloem is the living tissue made up of small tubes which carry watery sap containing sugar and other organic nutrients to all parts of the plant where the nutrients are used for growth, or stored until needed. The sugar is made by photosynthesis. In trees, the phloem is the innermost layer of the bark.Other insects feed on the phloem by inserting a fine tube into the plant, penetrating the tiny phloem cells deep within the plant. The high pressure in the phloem tubes forces the phloem sap into the insect. Most of the sugar passes right through the insect, so that nearby surfaces get sticky and often become black due to the growth of fungus.

Answer 2

Answer:

Hey mate,

Your answer is as follows:

1. The phloem is composed of sieve tubes, companion cells, phloem parenchyma and fibres. The fibres are the dead sclerenchymatous cells in the phloem responsible for mechanical support. These cells are considered as non-living components of phloem.

2. Xylem tissue forms from cells that are derived from meristematic cells commonly called procambium and cambium. These meristems contain pluripotent stem cells which have the ability to continuously divide and maintain the stem cell population, a so-called 'stem cell niche'.

Explanation:

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