Very few grains of pollen land on the stigma of other flowers, let alone flowers of the correct species. To overcome this obstacle, some plants depend on animals for their pollination. Some plants are pollinated by birds, such as the hummingbird. A small number of plants are pollinated by rats.
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Answer:
Very few grains of pollen land on the stigma of other flowers, let alone flowers of the correct species. To overcome this obstacle, some plants depend on animals for their pollination. Some plants are pollinated by birds, such as the hummingbird. A small number of plants are pollinated by rats.
Explanation: