<span>Sponges possess the defense mechanism of releasing toxins that make a predator</span>
Answer: Embryos and the development of embryos of various species within a class are similar even if their adult forms look nothing alike.
Explanation:
The statement above is TRUE.
The osteon is the fundamental functional unit of a compact bone. Osteons are roughly cylindrical in shape and they are typically several millimetre long and about 0.2mm in diameter. The osteon resembles the growth ring of a tree trunk.
The cylindrical structure of osteon is made up of four different parts which are a central tube, a lamellae, a lacunae and canaliculi.
