The vascular cambium normally gives rise to

I. Annual rigs are formed as a result of seasonal environmental conditions

II. Tracheids/vessels elements are larger during periods when water is abundant

III. Tracheids/vessels elements have thicker wall during periods of water deprivation

IV. Wood formed in the previous years is darker than newer wood

Select the combination of correct statements from the options given below

In dicot root, the cork cambium is formed with the help of

Springwood, formed during the spring season, exhibits distinct features. Which of the following is NOT a characteristic of springwood?

The growth of root and stem in length with the help of apical meristem is called …A…. Apart from primary growth most dicotyledonous plant exhibit an increase in girth called …B… Choose the correct combination of A, B and C in respect to the above paragraph

Secondary phloem remains functional generally

The age of tree can’t be determined by annual rings if the tree belongs to the

In dicot root, the cork cambium is formed with the help of

Identify the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

I.Secondary cortex

II.Autumn wood

III.Secondary phloem

IV.Phellem

Cork cambium of dicot originates from

Growth rings are formed due to activity of