Other Echinoderm |
Holothuroidea |
Secondary bilateral symmetry |
Secondary bilateral symmetry |
Pentaradial body shape |
Pentaradial body shape |
Large ossicles determining body shape |
Ossicles microscopic |
Primary movement using tube feet |
Primary movement using tube feet |
Oral tube feet for feeding |
Oral tube feet for feeding |
Presence of arms and spine |
Respiratory tree |
Echinoderms are exclusively marine animal. Arms and spine found in the other classes of Echinodermata but these are absent in class Holothuroidea.
All the echinoderm ( Including Holothuroidea class) have Pentaradial body shape.
Sea cucumber comes under class Holothuroidea. They have the same five fold symmetry at their tentacles.
Ossicles are calcified structure present in the dermis of echinoderms. These are microscopic in Holothuroidea class.
Animals in the phylum Echinodermata (such as sea stars, sand dollars, and sea urchins) display radial symmetry as adults, but their larval stages exhibit bilateral symmetry. This is termed secondary radial symmetry.
The sea cucumber has three sites for oxygen uptake: the tube feet, the body wall, and the respiratory tree. Respiratory trees are unique to sea cucumbers and are not found in any other echinoderm. All species of holothuroidea must use at least one of these organs to breath.
Presence of arms or spines Other Echinoderms Large ossicles determine body shape Oral tube feet for...
Match the description of the endoskeleton with the correct
echinoderm class.
5 Gently cut the tissue away from the central disk to find the internal structures featured in Figure 31.8. Record your observations and labeled sketch in the space provided. 6 Thoroughly clean your laboratory station and equipment. Return the dry equipment, and discard the sea star as indicated by the instructor Sea star Check Your Understanding 1.1 Variability is seen in the endoskeleton of the different echinoderm classes. Match...
Macro algae, or seaweeds are classified in 3 large groups based on their photosynthetic pigment colors. Which two groups are more closely related to each other and to land plants? green algae and brown algae green algae and red algae red algae and brown algae 2.The simplest and most evolutionarily ancient primary producers are: diatoms cyanobacteria (AKA bluegreen algae) unicellular algae plants dinoflagellates Ocean water is salty because there are ions (salts) dissolved in the water. What are the 2...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...