AWhich organelle is not found in plant cells? vacuoles mitochondria chloroplast centrioles

Legumes, a type of plant, require rhizobia, a type of soil bacteria, to survive since these organisms fix nitrogen during photosynthesis. rhizobia use the legumes for food. what would most likely happen to the legume population if rhizobia suddenly became extinct?

Which feature of a human community is similar to a niche in a biological community

Some substances but not other can cross the (blank) membrane of a cell