Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled. Other than these features, they have very little in common. You can think about protists as all eukaryotic organisms that are neither animals, nor plants, nor fungi.
Solution:
The four main types of macromolecules found in living organisms, are as follows:
• Proteins.
• Carbohydrates.
• Lipids.
• Nucleic Acids.
Macromolecules are large, complex molecules. It is the product of many smaller molecular units. It is also known as Polymer
Thus the required answer is proteins, carbohydrate, lipids, and nuclear acids.
The following are the characteristics of Cnidaria:
1. The organisms have specialized stinging cells known as cnidocytes.
2. Two types of body plans exist, that is, polyp and medusa.
3. The phenomenon of alternation of generation is observed.
The following are the characteristics of Porifera:
1. The organisms lack symmetry.
2. The adult forms are sessile.
3. The organisms obtain food by filtering water.
i believe the answer is 300. ;)
