Long answer type questions
If a collection of invertebrates are presented to you what criteria would you use to classify them?
If a collection of invertebrates are presented to you what criteria would you use to classify them?
Invertebrates are classified into several phyla. According to the below description, we can classify the invertebrtes:
Porifera - They are sponge like creatures that lives underwater. They are asymmetrical in nature and has no true body cavity. Examples: Demosponges, sea sponges, etc.
Cnidaria - They are jelly like creatures made up of connective tissues. They have radial symmetry and has no true body cavity. Examples: Jellyfish, sea anemones, etc.
Platyhelminthes - They are free living creatures with a flattened body and no body cavity. It has distinct head and tails and exhibit bilateral symmetry. Examples: Tapeworm, planaria, etc.
Nematoda - They are free living cylindrical bodies with no specific body segments. They exhibit bilateral symmetry. Examples: Roundworms, Hookwarm, etc.
Annelida - They are free living cylindrical bodies with specific body segments and well developed organs. They exhibit bilateral symmetry. Examples: Earthworm, leeches, etc.
Mollusca - They are soft body creatures covered by hard shell like structures. They exhibit bilateral symmetry. Examples includes Squid, snails, etc.
Echinodermata - They have arm like structures, usually five in number. They are marine environments with tube feet and exhibits radial symmetry. Examples: Sea urchins, starfish, etc.
Arthropoda - They are exoskeleton structures with segmented bodies and multiple legs. They exhibit bilateral symmetry and they have to shed their exoskeleton and grow a new as they grow. Examples: Insects, Spiders, etc.
Invertebrates are classified into several phyla. According to the below description, we can classify the invertebrtes:
Porifera - They are sponge like creatures that lives underwater. They are asymmetrical in nature and has no true body cavity. Examples: Demosponges, sea sponges, etc.
Cnidaria - They are jelly like creatures made up of connective tissues. They have radial symmetry and has no true body cavity. Examples: Jellyfish, sea anemones, etc.
Platyhelminthes - They are free living creatures with a flattened body and no body cavity. It has distinct head and tails and exhibit bilateral symmetry. Examples: Tapeworm, planaria, etc.
Nematoda - They are free living cylindrical bodies with no specific body segments. They exhibit bilateral symmetry. Examples: Roundworms, Hookwarm, etc.
Annelida - They are free living cylindrical bodies with specific body segments and well developed organs. They exhibit bilateral symmetry. Examples: Earthworm, leeches, etc.
Mollusca - They are soft body creatures covered by hard shell like structures. They exhibit bilateral symmetry. Examples includes Squid, snails, etc.
Echinodermata - They have arm like structures, usually five in number. They are marine environments with tube feet and exhibits radial symmetry. Examples: Sea urchins, starfish, etc.
Arthropoda - They are exoskeleton structures with segmented bodies and multiple legs. They exhibit bilateral symmetry and they have to shed their exoskeleton and grow a new as they grow. Examples: Insects, Spiders, etc.
