The cell membrane is what surrounds a cell and allows water to pass through.
1. the answer is clay
2. the answer is lichens
Seedless nonvascular plants reproduce asexually through fragmentation. The parent organism are divided in fragments and these fragments or pieces grow into fully developed organisms. Plants like liverworts and lichens reproduce through this method.
They have a certain shape of active sites which only fit in certain substrates
See lock and key theoru
