MCQ
Gause law is related to
- APredation
- BParasitism
- ✓Competition
- DMutualism
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$II.$ 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

$\begin{array}{|l|l|} \hline Col\,\,A & Col\,\,B \\ \hline 1.\,\,Species & P.\,\,Solanum \\ \hline 2.\,\,Genus & Q.\,\,Leo \\ \hline 3.\,\,Family & R.\,\,Polymoniales \\ \hline 4.\,\,Order & S.\,\,Felidae \\ \hline \end{array}$