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Study the following flow chart and select the correct option for P, Q, R and S.
P Q R S
Banana, Canna Fan palm Mango, Peepal Smilax Zizyphus
P Q R S
Banana, Canna Smilax Zizyphus Mango, Peepal Fan palm
P Q R S
Mango, Peepal Banana, Canna Fan palm Smilax Zizyphus
P Q R S
Mango, Peepal Fan palm Smilax Zizyphus Banana, Canna
Answers (1)
As we learned
Venation -
The arrangement of veins & veinlets in leaves (lamina) is known as venation. Venation is of two type - reticulate and parallel.
Reticulate venation - Many vein (mid-vein) divides into various branches (veinlets) and form a net like structure. Ex: Dicot plants except callophylum.
- When many lateral veins arise from central mid of rib and proceed toward margin and apex of lamina, is called pinnate or unicostate . Ex: Mango, peepal
- When many principle veins arise from the petiole and proceed upward called multicostate or palmate. Ex: Camphor, Tejpata, China rose
Parallel venation, - All veins run parallel to each other and do not form network. It is found in monocot except smilax.
- It can be pinnate (Banana, Ginger, Guava) & palmate (papaya)
- wherein
Functions of veins:
Veins are useful for transportation of water, minerals and nutrients and provide mechanical support
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