Sindh Textbook Board Biology Book For class 12th






In today's post you will get the direct download link of Sindh Textbook Board Jamshoro Biology Book For class 12th in pdf form. We are working day and night to provide study materials for students free of cost to obtain highest marks in their board exams as well as in entry tests.


In the 2nd year biology the most amazing phenomenon is the development of new multicellular organism from one cell of zygote. It is our common observation that, a zygote of mouse develop into mouse, a tape worm zygote into tape worm zygote and an earth worm zygote into earth worm zygote.



So thus a single celled zygote undergoes a series of progressive changes that occur in the zygote after which it becomes a multicellular adult. The developing structure from zygote, which undergoes through these changes is called embryo. Growth may be defined as " A permanent irreversible increase in size, weight, shape and structure usually accompanied by a permanent change of form" . A new born baby becomes mature when it is passed through the process of growth.



The Apical or the primary growth, as just defined as, increases the length of stems and roots. The first step in secondary growth involves the linking of these groups to form a ring of cambium tissue between the xylem and the phloem. The xylem and the phloem is achieved by radical divisions of the cambium cells.


The first step in secondary growth involves the linking of these groups to from a ring of cambium tissue between the xylem and the phloem. This is archived by radical divisions of the cambium cells. So the xylem is situated on the inner side of the cambium ring and the phloem is situated on the outer side of cambium ring.



Now you will get the direct download link for the text book of biology for class 12th of Sindh textbook board, Jamshoro. Just click on the download text given below the download will begin automatically. You will get this book in pdf form. You can use this book for board and entry tests preparation all across the Pakistan.


File Type: Pdf

File Size:  111 MB

File Pages: 307

          Download 

Also Read:

Post a Comment

Please Do not put any Link otherwise you will be blocked. Thanks
Talibilm.com

Previous Post Next Post
Youtube Channel Image
Talib ilm Subscribe To Get More Study Stuff
Subscribe