Evolution of dicot plant

                             

                               Topic: Evolution of dicot plant

                             

                                

                                         

                  Choose the best answer

1-      How many species of dicot?

1-100,000                               2-600,000                           3-300,000

2- No of part of each flower in dicot?

1-three                                       2-three or four                      3-four or five

2-      No of pores in pollen of dicot?

1-five                                           2-six                                        3-three

4-No of cotyledon in dicot

1-three                                      2-two or three                       3-two

5-Arrangment of vascular bundles in stem

1-scattered                               2-arranged                             3-concentric circles

6-Arrangment of major leaf veins

1-parallel                                 2-antiparallel                           3-reticulate

7-Which type of roots develop in dicot   

1-adventitious                       2-fiberous                                  3-taperoot system            

8-Is secondary growth present in dicot?

1-present                                2-absent                                    3-often present

9-Vascular tissues arranged in

1-circular                                    2-anticircular                         3-ring

10-The vascular system divided into

1-cortex                                     2-stele                                    both 1and2

11-Secondary growth helps in production of

1-wood                                     2-stele                                   3-wood and bark

12-In an annual ring the light colored part is

1-heartwood                         2-latewood                             3-earlywood

13-The dark and harder portion of secondary xylem that cannot conduct water in older stem called

1-bast                                   2-wood                                         3-duraman

14-As secondary growth proceeds in a dicot stem increase

1-sapwood increase                        2-heartwood increase                              3-both heart and sap wood

15-Which one of the following is the correct sequence of tissues present in dicot stem during secondary growth?

1-phellogen, cork, primary stem, secondary cortex    2-cork’secondary cortex, phellogen, primary stem

                                         3-primary cortex, secondary cortex, phellogen                                                                                                                           16-xylem in dicot is                                                                                                                                                                                           1-endarch                                   2-mesarch                                                3-exarch                                                                                  17-the cambium is partly                                                                                                                                                                                        1-primary                                    2-secondary                                             3-both 1and 2                                                                       18-more amount of cork is produced                                                                                                                                                           1-water transport                      2-respiration                                           3-protection                                                                                 19-less amount of cork is produced in                                                                                                                                                      1-stem                                         2-leaves                                                    3-root                                                                                        20-the parenchymatous conjunctive tissue forms                                                                                                                                                      1-vascular bundle                     2-vessel                                                    3-vascular cambium                                                                                                 21any example of dicot                                                                                                                                                                                  1-ficus                                         2-maize                                                     3-musa                                                                                         22-what condition of cambial ring in dicot root in beginning and later                                                                                                1-circular                                  2- ring form                                                  3-wavy                                                                                                     23-stem develop from                                                                                                                                                                                 1-plumule                                  2-radical                                                 3-adventitious root                                                                      24-roots develop from                                                                                                                                                                                                                    1-radicle                                    2-plumule                                               3-none of these                                                                                           25-what type of venation in dicot leaf                                                                                                                                                                          1-net –like venation              2-parallel venation                                  3- antiparallel venation

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