Answer:
A
B
D
Explanation:
The Digestive System, the Immune System and the Reproductive System have common functions because they all do the same thing. They all digest food but in their different ways
I believe the word is stubborn.
That's because muscle cells require a lot of energy, more so than other parts of the body. They need more mitochondria because a mitochondria is the powerhouse of the cell.
1. Simple Diffusion is a passive transport in which particles pass through the plasma membrane surrounding a cell. Diffusion is the random movement of particles with the net direction of the particles being from an area of higher concentration to an area of lower concentration.
<h2>Phylum Annelida</h2>
Explanation:
The given animal must be an Annelid.
Annelids are commonly called segmented worms. The characteristics features of annelid are:
- Segmented bodies , each segment is called annuli.
- Closed circulatory system.
- Stiff appendages and flexible skin.
- Eucoelomate i.e the presence of true coelom.
- Nephridia as excretory organs.
Since the animal discovered by the marine biologist has a segmented body and true coelom, it is obviously categorized in Phylum Annelida.
