Assertion (A) : Phellogen is a secondary meristem that forms cork on the outer side and secondary cortex on the inner side.
Reason (R) : Phellogen is formed every year from hypodermis and pericycle in dicot root and dicot stem respectively.
1. If both Assertion & Reason are true and the reason is the correct explanation of the assertion.
2. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion.
3. If Assertion is a true statement but the reason is false.
4. If both Assertion and Reason are false statements.
Statement A | Annual rings can be distinctly observed in plants growing in temperate regions |
Statement B | In temperate regions, the climatic conditions are not uniform throughout the year |
1. | Statement A is correct but statement B is wrong |
2. | Both the statement A and B are correct and statement B is the correct explanation of statement A |
3. | Both the statements A and B are correct but statement B is not the correct explanation of statement A |
4. | Both the statements A and B are incorrect |
(i) | Autumn wood and spring wood appear as alternate concentric rings and constitute an annual ring. |
(ii) | Late wood possesses vessels of narrow diameter relative to early wood. |
(iii) | Annual rings seen in cut stems give an estimate of the age of the tree and this method is called a dendrogram. |
(iv) | Cambium is more active during the spring season than the winter season. |
(v) | Growth rings or annual rings are very prominent in the trees growing near sea shores. |