Phylum Nematoda Flashcards
1
Q
Characteristics of phylum Nematoda:
A
- under super phylum Ecdyozoa
- protosomes
- have pseudocoelomates
- molts the collagenous cuticle
- complete gut
- have fixed number of cells known as eutely
- can be parasitic
- have syncytial epidermis eg.giant cell with many nuclei
2
Q
How do Nematodes move?
A
- through rigid cuticle
- through fluid in the pseudocoel
- with longitudinal muscles
3
Q
How do Nematodes reproduce?
A
- asexual
- sexual since they are dioecious
- internal fertilization
4
Q
How do Nematodes develop?
A
- there is cell enlargement
- NO increase in cell number
5
Q
What is the importance of species Caenorhabditis elegans?
A
- model organism for developmental genetics
- cell lineage known for all cells
- synaptic connections mapped
- ENTIRE genome sequenced
