leaves

                   Mcqs on leaves

Choose the correct one.
1. Mainly food produce in plant part
     1. Root 2. Stem 3. Leaf                                                        Leaf
2. Leaf is connected with stem through
     1. Petiole 2. Peduncle   3. Vein                                          Petiole
3. Flat part of leaf extends off the end of petiole is
     1. Stomata 2. Blade 3. Vein                                                 Blade
4. Waterproof covering of leaf is
     1. Cuticle 2. Xylem 3. Stomata                                            Cuticle
5. Little opening in leaf which is use for exchange of gases is
       1. Stomata 2. Xylem 3. Phloem                                          Stomata
6. Releasing of water from plant into air called
      1. Transportation 2. Transpiration 3. Transduction           Transpiration
7. Green material in leaf, essential for making food is
      1. Chlorophyll 2. Xylem 3. Phloem                                        Chlorophyll
8. Leaf are colored due to presence of
      1. Veins 2. Xylem 3. Pigments                                                Pigments
9. Compound leaf has a number of
      1. Leaflets 2. Shoots 3. Petiole                                             Leaflets
10. Top layer of leaf is
        1. Cuticle 2. Xylem 3. Stomata                                            Cuticle
11. Leaf have one main vein (Midrib) & smaller branching vein is called as
        1. Palmate 2. Pinnate 3. Stomata                                        Pinnate
12. Leaf with several large vein from leaf base to blade
            1. Palmate 2. Pinnate 3. Stomata                                     Palmate
13. Leaves are evolved about
        1. 390 MYA 2.380 MYA 3. 400 MYA                                   380 MYA
14. First leaf that evolved termed as
    1. Microphyll 2. Megaphyll 3. Leaves                                    Microphyll
15. First leaves arises from stem and lacks
     1. Leaf gape 2. Leaf lets 3. Leaf vein
16. Modern leaves are evolved at
      1. 300 MYA 2.370 MYA 3. 350 MYA                                    350 MYA                                  
17. Megaphyll evoled at
    1. 300 MYA 2.340 MYA 3. 350 MYA                                    350 MYA                   
18. Origin of microphyllous leaves have
    1. Leafless ancestor 2. With leaf 3. With small outgrowth            Leafless ancestor  
19. Early land plants had small leaf like out growth called as
      1. Venation 2. Enations 3. Promation                                             Enations
20. Leaf exchange gases with
        1. Atmosphere 2. Other plant 3. Root to leaf                              Atmosphere

21. Leaves increases the surface area of plant
       1. 20 time 2. 100 time 3.  Many times                                                 Many times
22. Leaves are primary sites of
          1. Photosynthesis 2. Transportation 3. Secretion                           Photosynthesis
23. Leaves are partial
      1. Roots 2. Shoots 3. Rhizome                                                          Shoots
24. Leaf have maximum stomata
    1. 50 thousand 2. 10 thousand 3. 100 thousand                                       100 thousand
25. The outer covering of leaf is
    1. Epidermis 2. Endodermis 3. Mesodermis                                             Epidermis

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