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High School Quiz, Horticulture: High School quiz, Horticulture Question :Grapes grow well in Nebraska. True False Grapes grow here but not well. Question :How much lawn area is needed to produce a continual supply of oxygen for a family of four? ten square feet fifty square feet 1000 square feet Question : Which of these plants attract butterflies? milkweed juniper turfgrass Question : Which two animals listed below help plants reproduce by either pollination or spreading seeds? snakes and snails mice and gophers birds and bees Question : Which of these plants is NOT native to Nebraska? cottonwood trees coneflower cabbage Question :Plant cloning was invented about ten years ago. true false trick question, plants cannot be cloned Question :Xeriscaping is a type of landscaping that uses plants that need very little.. water sunlight clean air Take Quiz