Question

Provide a brief description/explanation about any of the 3 questions:

a) Definitions of an "animal"

b) Differences between true animals and the other kingdoms especially plants

c) Cell functions that allowed animal multicellularity

d) At least 3 hypotheses that led to the Cambrian explosion

e) Advantages of a body cavity

f) Choanoflagellates and animals

Answer 1

a)

The individual or the member who id from the group of Animalia and which are the multicelluar organisms they can be defined as the animals. Such animals may possess the shape and may also have the growth which is defined to certain limit and also has the ability to make the movement voluntarily by their own.Animala are that one whose body comprises of the sensory and the nervous system due to which they possess the ability to respond to the particular stimuli. So, suc individual can be defined as the animals.

b) The main difference between the true animals and the other kingdom especially the plant include the difference of the nervous system. True animals are that which possess the nervous system whereas the plant lack the nervous system. On the other hand plants take carbon dioxide in where the animals inhale the oxygen. As plant required the CO2 for the formation of the organic compound as the animals cannot able to make up the organic compound so that why they take the organic compound by eating the plants.

e) The advantages of the body fluid will include the :

• circulation because in the body cavity there is the presence of the fluid which can also be useful in the functioning of the circulatory system.
• Also the fluid that are been present in the body cavity helps the body to get rigid which helps the body to do the muscular contraction in effective way.
• The organ of the internal body will also get protected due to the body cavity. because the movement of the muscle may lead to the distortion of the outer body but the internal body may get protected.