植物知识竞赛

1、 植物的根总向下长。茎总向上长，其原因是----？ 
                              A、 本能     B、地心引力作用      C、无法解释

                                                       2、 根的主要生理功能是---？ 
                                                                      A、固定作用       B、储藏作用   C、吸收作用 

                                                      3、 植物和动物最大的区别在于植物具有---？ 
                                               A、光合作用  B、 蒸腾作用 C、 吸收作用 

                                                      4、 我们吃的马铃薯实际上是它的---？ 
                                                                       A、 根           B、果实        C、茎  

                                                     5、 我们吃的萝卜实际上是它的---？ 
                                                                       A、 茎      B、根        C、果实  

                                                   6、 仙人掌的刺是---变态？ 
                                               A、 叶         B、茎        C、根 

                                                  7、 我们吃草莓是吃它的---？ 
                                                                       A、果实       B. 花托       C、茎


                                                 8、 茄科植物的主要特点是---? 
                                                                       A、 果实好吃        B、草本        C、花萼宿存 

                                                9、 下列那些花属于合瓣花？ 
                                                                      A、 桃花        B、菊花      C、牵牛花 

                                              10、 下列那些树是雌雄异株的？ 
                                                                      A、 桃树     B、银杏     C、柳树 

                                             11、 下列那些花是春天开放的？ 
                                                                      A、 菊花          B郁金香      C梅花

                                             12、 下列那种植物是先花后叶的？ 
                                              A、 山桃花      B丁香         C珍珠梅  

                                            13、 下列那种植物为自花传粉？ 
                                                                   A、 玉米    B苹果   C豌豆  

                                           14、 无子西瓜是---倍体？ 
                                                                   A. 2      B. 3       C. 4  


                                          15、 下列那个不是浆果？ 
                                             A、 桃        B、葡萄            C、番茄  

                                          16、 西瓜属于---科？ 
                                                                   A、 瓜科       B、茄科           C、葫芦科 

                                          17、 ---果为豆科植物所特有？ 
                                                                 A、 核果          B、荚果        C、蒴果  

                                         18、 下列哪个不是翅果？ 
                                           A、 向日葵         B、榆钱       C、臭椿  

                                        19、 蒲公英主要靠---传播种子？ 
                                                                  A、 水力        B、风力        C、弹力   

                                       20、 植物分类中最小一级单位是---？ 
                                                                 A、 科     B、属        C、种