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6.Anatomy of Flowering Plants
medium
$I.$ 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
A
$I$ and $II$
B
$II$ and $IV$
C
$I$, $II$ and $III$
D
$II$, $III$ and $IV$
Solution
In the formation, the heart wood and sap wood, it is not necessarily that the wood formed in previous years is darker than newer wood
Standard 11
Biology
