Multicellular organisms must be protected from the external environment. because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier of

a)
cellular tissue.

b)
epithelial tissue.

c)
connective tissue.

d)
interstitial tissue.

Multicellular organisms must be protected from the external environment. Because of this, cells of even the simplest multicellular organisms are arranged to form an external barrier of

Explanation:

B) epithelial tissue

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

when the displaced particles are perpendicular to the direction the wave travels, is called a transverse wave, whereas in longitudinal wave the displace practices are parallel to the direction of the wave.

in the given image:

first image shows - longitudinal wave

second image shows - transverse wave

third image shows - longitudinal wave

fourth image shows - longitudinal wave