Animal Kingdom Flashcards
Basis of Classification
Organ system
Body symmetry
Coelom
Segmentation
Diploblastic Triploblastic
Notochord
What is Metamerism?
and in which animal can it be observed?
When the body is externally and internally divided into segments with the serial repetition of at least some organs
Based on coelom animals can be classified as?
Coelomates
Pseudocoelomates
Acoelomates
What is Coelom?
The cavity between the body wall and the gut wall lined with mesoderm
What is mesoglea
Undifferentiated layer in diploblastic organisms
characteristics…
Porifera (Sponges)
Water conduction, parts involved, digestion, skeleton, examples
- Aquatiic, Asymmetrical, Hermpaphrodite, cellular level of organisation
- Ostia(pores) to Spogocoel (tract) to Oscullum (little mouth)
- Intracellular digestion, Choanocytes in canals
- Spicules and Spongin fibres form skeleton
- EG: Sycon, Spongylla, Euspongia
Characteristics…
Coelenterata (cnidaria)
Digestion,two body forms,get their name from,structure,skeleton ofcorals
- Radially symmetrical, tissue level organisation, Diploblasts
- Get their name from Cnidoblasts which are used for anchorage, stinging and capturing prey.
- Digestion is intracellular and extracellular
- Central gastrovascular cavity w/ single opening, mouth on hypostome.
- Coral skeleton is made of Calcium Carbonate
- Body forms exist as polyp and medusa
common names, characteristics
Ctenophora
Structure, digestion, One special trait, Reproduction
- Commonly known as comb jellies or sea walnuts
- They are exclusively marine, radially symmetrical, diploblastic and exhibhit tissue level of organisation
- 8 external rows of ciliated comb plates
- BIOLUMINESCENCE
- Digestion is intracellular and extracellular.
- Sexes are not seperate, sexual reproduction, external fertilisation.
Characteristics…
Platyhelminthes
Structure, absorption, osmoregulation and excretion by? Reproduction
- Dorso-ventrally flattened, hence also called flatworms, endoparasites found in animals including human being, bilaterally symmetrical, triploblastic, organ level of organisation, acoelomates.
- Has hooks and suckers, may get nutirents directly from the surface of their bodies.
- Osmoregulation and excretion regulated by flame cells
- Sexes are not seperate, fertilsation is internal and development is through various laraval stages
A Platyhelminthes with extraordinary regeneration power
PLANARIA!!!!!!!
Characteristics…
Aschelminthes
Internal organs, reproduction
- Bilaterally symmetrical, triploblastic, pseudocoelomates, organ level of organisation,
- Complete alimentary canal with a well developed muscular pharynx.
- Sexes are seperate, internal fertilsation, direct or indirect development.
- Females are longe than males.
characteristics
Annelida
Structure, reproduction, osmoregulation, sexes, neural system
- Bilaterally symmetrical, triploblastic, coelomates, organ level of organisation, closed circulation, metamerically segmented.
- In aquatic annelids parapodia, a lateral appendage helps in locomotion and they are dioecious (Nereis)
- Land annelids are monoecious and locomotion is due to circular and longitudenal musclrs in the body.
- Nephridia help in osmoregulation and excretion
- Sexual reprodcution
- Neural system consists of paired ganglia connected to a double ventra nerve cord by lateral nerves
Characteristics…
Arthro poda
(Joint) (Appendages)
Structure, appendages, breathing organs, sensory organs, excretion, *ovi
- They have a head thorax and abdomen
- Jointed appendages
- gills, book gills, tracheal system, book lungs
- Anntenae, eyes (simple or compound, statocysts, balancicng organs,
- Oviparous, dioecious
- Excretion takes place through malpighian tubes.
- They have a chitinous exoskeleton
Which is the Largest Phylum of animalia?
Arthropoda
How does excretion take place in arthropoda?
Malpighian tubes
