--%>
Assignment Help - homework help

  Pteridophytes

Pteridophytes:

Such division involves horsetails, club mosses, and ferns. The oldest acknowledged pteridophytes are fossils from the end of the Silurian period, that is, 380 million years ago. Pteridophyta comprises the earliest acknowledged vascular plants. Vascular plants are those plants which have the vascular tissue which is the conducting tissue of xylem and phloem. At times each vascular plant is involved in one division that is the Tracheophyta. This is to emphasize the advance nature of the vascular tissue over simple conducting cells of some Algae and Bryophytes. Tracheophyta involves pteridophytes and the more advanced spermatophytes (i.e., seed bearing plants) as two classifications.

Existence of vascular tissue is a feature of sporophyte generation that in the bryophytes is small and reliant on the gametophyte. The occurrence of vascular tissue in sporophyte is one of the reasons why sporophyte generation has become dominant one in all vascular plants.  The vascular tissue of pteridophytes exhibits certain primitive features as compared with flowering plants. The xylem of pteridophytes has only tracheids instead of vessels and the phloem has sieve cells instead of sieve tubes.

Vascular tissue has two significant roles to execute initially it forms a transport system, conducting water and food about the multi-cellular body, therefore leading to the development of big, complex bodies. Secondly, xylem, one of the vascular tissues, supports such big bodies as xylem holds lignified cells of great strength and firmness.

1160_Pteridophytes.jpg

 Figure: Graphical symbolization of life cycle of Pteridophyte (Homosporous)

 

Latest technology based Biology Online Tutoring Assistance

Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Bryophytes homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Bryophytes, project ideas and tutorials. We provide email based Bryophytes homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Bryophytes. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Biology homework help and assignment help services. They use their experience, as they have solved thousands of the Biology assignments, which may help you to solve your complex issues of Bryophytes. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.