NEET BIOLOGY

PLANT PHYSIOLOGY

PLANT GROWTH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Bark consists of what tissue?
A
vascular cambium, secondary xylem and secondary phloem
B
cork cambium and secondary xylem
C
cork cambium, cork and older secondary phloem
D
vascular cambium and secondary phloem
Explanation: 

Detailed explanation-1: -Bark is a non-technical term that includes all the tissues outside the vascular cambium. If the axis is young, the bark may include, from the cambium outward, secondary phloem, primary phloem, primary cortex, phelloderm (if present), cork cambium, and phellem (cork).

Detailed explanation-2: -Bark is found on the outermost surface of woody plants. It is made up of several tissues that include secondary phloem, cork cambium and cork.

Detailed explanation-3: -So, it is known as Cuboidal epithelial tissue. Bark of a tree is also called cork and is made up of simple permanent tissue.

Detailed explanation-4: -One of the valuable components of barks is cork (phellem in anatomy) due to a rather unique set of properties and composition. Cork from the cork oak (Quercus suber) has been extensively studied, mostly because of its economic importance and worldwide utilization of cork products.

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