Q. No.The exchange of gases between the outer atmosphere and internal tissue of stem is through ___________.
| 1. | Lenticels | 2. | Legume |
| 3. | Epidermis | 4. | Cambium ring |
Phellogen, phellem and phelloderm are collectively known as
| 1. | Phellogram | 2. | Periderm |
| 3. | Cork | 4. | Phalanges |
Bark formed towards the end of the season is called ________ bark.
1. Soft
2. Hard
3. Turbid
4. Rigid
In dicot root the vascular cambium is completely _________ in origin.
(1) Primary
(2) Secondary
(3) Tertiary
(4) Quaternary
The peripheral region of secondary xylem lighter in colour is
(1) Sapwood
(2) Heartwood
(3) Annular wood
(4) Bark wood
(1) Sapwood
(2) Heartwood
(3) Annular wood
(4) Bark wood
Bark that is formed early in season is called __________ bark.
| 1. | Hard | 2. | Soft |
| 3. | Turbid | 4. | Lenticels |
Dicotyledonous leaf is also known as
| 1. | Dorsiventral leaf | 2. | Bi-facial leaf |
| 3. | Both A and B | 4. | Isobilateral leaf |
Death of protoplasm is a pre-requisite for vital function like
(1) Transport of sap
(2) Transport of food
(3) Absorption of water
(4) Gaseous exchange
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