Porifera comb jellies and corals
<span>A.<span>It
is present at the center of the root, surrounded by the pericycle, and
has the vascular tissues like xylem, phloem, and cambium inside it.</span></span>
Vertebrae have a central opening, called vertebral foramen, that form the spinal canal and contain the spinal cord.
<span>Wide variety of fish species. It always includes this intertidal zone and is
sometimes used to mean the same as the intertidal zone. Though, the meaning of
"littoral zone" can be overall well beyond the intertidal zone. The
littoral zone is the same as a sea, lake or river that is close to the shore.
In coastal environments the littoral zone extends from the high water mark,
which is very rare inundated, to shoreline areas that are permanently submerged.</span>
