Phellogen, phellem and phelloderm are collectively known as
Bark that is formed early in season is called __________ bark.
Bark formed towards the end of the season is called ________ bark.
The exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.
In a TS of lenticel arrange these in order (interior to exterior)
1. Secondary cortex
3. Cork cambium
4. Complementary cells
A. 1, 3, 4, 2
B. 1, 2, 3, 4
C. 1, 4, 3, 2
D. 4, 1, 2, 3
In dicot root the vascular cambium is completely _________ in origin.
Which one yields fibres?
Death of protoplasm is a pre-requisite for vital function like
Dicotyledonous leaf is also known as
(C)Both A and B
The main parts of the lamina of the dorsiventaral leaf are
(D)All of the above