In general animals are identified as being multicellular, heterotrophic by digestion and reproducing sexually.

Within the Kingdom Animalia we use different features to classify organisms.

One of the main criteria we use in classifying animals is their coelum or body cavity.

What is the purpose of a coelum and why is it so important?

Explain the difference between an Acoelomate, Pseudocoelomate and Coelomate animals.

Give examples of each.

Solutions

Expert Solution

purpose of a coelum and why is it so important:-

Coelom is important because it allows for the separation of different biological functions in the body. Animals lacking coelom have to be dependent on diffusion to transport important nutrients throughout the body. The coelom mainly called the main body cavity. Coelom helps to prevent injury to the digestive organs. There is a fluid called coelomic fluid inside the coelom. This fluid allows the internal organs to freely move. Between several different body parts and organs coelom helps to transport waste, nutrients and gases.

difference between an Acoelomate, Pseudocoelomate and Coelomate animals.

Acoelomate:- It is an invertebrate that does not contain or posess coelom.

- In acoelomates mesoderm develops into internal organs.

- Acoelomates does not contain a highly developed organ system.

- Acoelomates are unsegmented animals or invertebrates.

examples Platyhelminthes, Ribbon worms, tapeworms, flukes. etc

Coelomate :- It is invertebrate or either vertebrate that contain or posess coelom.

- In coelomates mesoderm develops into internal organs and tissues as well as coelom.

- Coelomates contain a comparatively developed organ system.

- Coelomates are segmented animals.

Examples, annelids, arthropods, Echinodermata, Brachiopoda, Ectoprocta,

Pseudocoelomate:- Pseudocoelomates are animals which do not have a proper body cavity.

- Pseudocoelomates contain or posess body cavity between endoderm and mesoderm.

- Pseudocoelom is derived from the blastocoel of the embryo.

- Inside the pseudocoelom organs are less organised.

examples: Nematoda, Entoprocta, Rotifera, Acenthocephala etc

gladiator answered 1 year ago

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