answer

Read this passage about two inherited traits in barnyard grass plants. Barnyard grass is a weed that often grows in rice fields. A bamyard grass seedling can have upright leaves that stick straight up or drooping leaves that curl down. Rice seedlings have upright leaves. So farmers weeding their rice fields by hand are more likely to mistake bamyard grass seedlings with upright leaves for rice plants. Farmers are more likely to recognize and remove barnyard grass seedlings with drooping leaves. a barnyard grass seedling with drooping leaves The graphs below describe leaf type in an isolated population of barnyard grass plants at the Start and end of a time period long enough for natural selection to occur, At the start of this time period, the barnyard grass plants' environment changed. Population at start Population at end 91% @ Plants with upright leaves Plants with drooping leaves Describe how the barnyard grass plant population changed over this time period. Use the theory of natural selection to construct a possible explanation for this change. The percentage of grass plants with upright leaves in the population. This suggests that grass plants with upright leaves were * jikely to survive and reproduce than grass plants with drooping leaves. This may have occurred because there were * farmers weeding the rice fields by hand after the population's environment changed. 50 grass plants with drooping leaves were * likely to be removed by farmers