Mycorrhizae are associations formed by fungi that grow on the roots of trees. These fungi penetrate into the roots of the trees. The trees produce energy through photosynthesis and share it with the fungi. The fungi act as decomposers, breaking down dead organic matter to provide nutrients for the trees to grow. The kind of relationship exhibited here is, A. The fungi share a mutualistic association with the trees.
The cell membrane is said to be selectively permeable is because it allows a select few things to go through while stopping the passage of other stuff.
I believe the answer is D
<span>Option D correctly describes seafloor spreading. Seafloor spreading is a process which typically occur at middle ocean ridges where new oceanic crusts are formed as a result of volcanic activity. These oceanic crusts then gradually move away from the ridge.</span>
