Lab 7, 8 and 9: An investigative look at the biology of invertebrates Flashcards
What two groups is kingdom animalia divided into? and what are they composed of?
- Basal animals –> primitive animals such as sponges, from phylum porifera that have no true tissues
and - Eumetazoa (true animals) that have true tissue
How many percentage do invertebrates make up in the animal species?
95%
What are the 6 phyla in the lab?
- Cnidaria
- platyhelminthes
- mollusca
- annelida
- nematoda
- arthropoda
- echinodermata
- chordata
Describe group cnidaria
consists of phylum cnidaria
- radial symmetry
- have tissue
- lack organ systems & coelom
- diplobastic
Describe the group “lophotrochozoa”
- protostomes (mouth forms first)
- triploblastic
- consists of platyhelminthes, mollusca and annelida phylums
- bilateral symmetry
- some have coelom and some don’t
Describe the group “ecdysozoa”
- protostomes (mouth forms first)
- they shed their skin
- they consist of phylum nematoda and arthropoda
- bilateral
- pseudoceolmate and ceolomate
- segmented and non-segmented
What are the basic features of Cnidaria and what species do they include
- live in aquatic areas
- include: jelly fish, sea anemones, hydras and corals
- they are diploblastic
- they have radial symmetry
- they have tissue
- they lack coelom
- they lack organs
What are the basic features of platyhelminthes and what species do they include
- flat worms mainly
- triploblastic and has true organs
- aceolomate
- bilateral
- unsegmented
- protostome
What are the basic features of Mollusca and what species do they include
- snails, octopus, and oysters
- can be terrestrial or marine
- triploblastic
- bilateral
- has true coelom
- non segmented
- protostome
What are the basic features of Annelids and what species do they include
- earthworms, leeches, lug worms and clam worms
- lives underground
- segmented
- bilateral
- triploblastic
- coelom present
- protostome development
What are the basic features of Nematoda and what species do they include
- includes round worms and nematodes
- live anywhere
- non-segmented
- bilateral
- triploblastic
- pseudoceolmate
- protostome development
- shed exoskeleton
What are the basic features of Arthropods and what species do they include
- includes daphnia, artemis franciscana, spiders, crabs, scorpion…other crustaceans
- depending on the species they can live on land or just water
- segmented
- triploblastic
- bilateral
- have ceolom
- protostome development
- shed exoskeleton
What are the two classes of species that we studied in this lab and which species are in it and what are some characteristics about those species?
- Branchiopoda (consisted of Daphnia species and Artemia franciscana species). Daphnia lives in the water only and artemis franciscana lives mainly in small bodies of water with salinity and its opt temp is 25 degrees
- Insecta –> live in warm, dark and damp environments
