What are the cell types that form the phloem, Biology

Assignment Help:

What are the cell types that form the phloem? What are the main features of those cells?

The major cells that form the phloem are the sieve elements and the companion cells. The sieve elements form the vessel walls; they are living enucleated cells positioned in series forming the sieve tubes. Among successive vessel elements there are communicating pores. The companion cells are located outside and alongside the sieve tubes and they help in the absorption of the material to be transported.

 


Related Discussions:- What are the cell types that form the phloem

Respiratory system, describe the structure of a lung in terms of covering m...

describe the structure of a lung in terms of covering membranes and cavities

Striped muscles, STRIPED MUSCLES - These muscles are found in the li...

STRIPED MUSCLES - These muscles are found in the limbs, body walls, tongue, pharynx and beginning of oesophagus and are under the control of animal's will. These muscle f

Define strategies for to overcome from alzheimer''s disease, Define Strateg...

Define Strategies for to overcome from alzheimer's disease? Some of these, based on the stage of the disease and individual needs are: a. supervising meal times with minimal

How to calculate the requirements for the calcium in body, How to Calculate...

How to Calculate the Requirements for the Calcium in Body? Requirements for calcium depend upon the rate at which calcium is incorporated into bone; they are therefore highest

Define distribution of body iron in different compartments, Define Distribu...

Define Distribution of body iron in different compartments? In humans, the total quantity of iron in the body varies with haemoglobin concentration, body weight, gender and the

Explain horizontal full mucoperiosteal flaps, Explain Horizontal Full Mucop...

Explain Horizontal Full Mucoperiosteal Flaps - Endodontic Surgery      a) Also called:  Envelope flap, b) Only a Horizontal incision, without the vertical releasing incision

Falling death rate, State the changes in society which could contribute to ...

State the changes in society which could contribute to a falling death rate. The changes in society which could contribute to a falling death rate are:  (i) improvements in

Are nematodes exclusively parasites, Are nematodes exclusively parasites? ...

Are nematodes exclusively parasites? There are parasitic roundworms, containing parasites of plants, but there are also free-living nematodes.

Composition of cell wall, COMPOSITION OF CELL WALL Cell wall composed ...

COMPOSITION OF CELL WALL Cell wall composed of cellulose, hemicellulose, pectin, lignin, cutin & chitin. Cell wall consists of 3 parts - 1. Matrix Highly cross-

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd