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Study the following flow chart and select the correct option for P, Q, R and S.

Option: 1

P                                                   Q                                                     R                                                     S

Banana, Canna                         Fan palm                                    Mango, Peepal                            Smilax Zizyphus

 


Option: 2

P                                                   Q                                                     R                                                     S

Banana, Canna                      Smilax Zizyphus                                  Mango, Peepal                            Fan palm   


Option: 3

P                                                   Q                                                     R                                                     S

Mango, Peepal                      Banana, Canna                                 Fan palm                                    Smilax Zizyphus


Option: 4

P                                                   Q                                                     R                                                     S

Mango, Peepal                         Fan palm                              Smilax Zizyphus                                   Banana, Canna                                                                              


Answers (1)

best_answer

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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