1) The word Fungi is itself a Latin word, which means "Mushroom." That's why mushroom is present in fungi group. Algae produce it's food by itself by the photosynthesis and are not parasitic.
2)A pea is a dicotyledonous plant, the seed (the pea itself) has two halves, cotyledons, hence dicot - di=2.
3)Those plants that bear flower and fruits after their maturity are called phanerogams. So mostly, they reproduce sexually. And mustard is the example if phanerogams.
