This group of organisms are parasitic on Arthropods but develop into free living adults that do not feed.
Group of nematomorpha that is parasitic to terrestrial arthropods.
Group of nematomorpha that are parasites on marine crustaceans
What three systems are lost in Phylum Nematomorpha
Excretory, circulatory and respiratory
Do members of phylum Nematomorpha express cephalization
No, they have no distinct head
How do members of Nematomorpha reproduce
They are dioecious meaning they reproduce sexually
Are members of Phylum Nematomorpha acoelomates, pseudocoelomates or eucoelomates
Pseudocoelomates- they do not have a true body cavity
Rotifers are _________ meaning that all adults possess the same number of cells.
Are Rotifers acoelomates, pseudocoelomates or eucoelomates
Some Rotifers produce a shielding plate structure called a ___________
In the Phylum Rotifer _____________ is practiced; meaning in some instances an underutilized egg can develop into a new individual.
Are Rotifers generally monoecious or dioecious
Dioecious but they are able to reproduce both sexually and asexually
What type of epidermis is located under the cuticle of a Rotifer
Syncytial (multinucleate) epidermis
Rotifers exhibit cryptobiosis, what does this mean?
It is an ametabolic state that they can enter into during harsh environmental conditions. During this state all metabolic process stop, preventing reproduction, development and repair. Once the environment reaches a stable state the organism will rehydrate and resume its metabolic processes.
This distinctive feature on a Rotifer is used for feeding and located near the mouth
This distinctive feature of a Rotifer is like a pharynx structure
This distinctive feature on a Rotifer is located in the neck , it is the first step in digestion and grinds the food up.
Trophi (jaw like)
This distinctive feature of a Rotifer is used for attachment
The digestive tract in a Rotifer is mouth to anus meaning what?
It is a complete digestive tract
Arthropods exhibit ___________ because they have functional clusters called ___________
What type of circulatory system can be found in Arthropods
Open circulatory system
What are some features that Arthropods have
Ecdysis- molting Metamorphosis Paired jointed appendages Chitinous exoskeleton Tagmata
What are the the 4 subphyla of Arthropoda
Subphylum Chelicerata Subphylum Crustacea Subphylum Myriapoda subphylum Hexapoda
What types of antennae do hexapods have
Olfactory - smell Auditory - sound Tactile - touch
Multiple compound eyes found in Subphylum Hexapoda
What is the first tagmata in a hexapod and what structures are found there
Head - salivary glands, pharynx, esophagus, pair of antennea, mouth parts, ommatidium (eyes)
What is the second tagmata in a hexapod
Thorax that is devided into prothorax, mesothorax, and metathorax