Table of Contents
- 1 How would you describe Porifera?
- 2 What is the characteristics of phylum?
- 3 What phylum do sponges belong to?
- 4 What are its major characteristics for of a sponges?
- 5 How does the name porifera relate to the structure of a sponge?
- 6 Why do sponges phylum Porifera represent a separate lineage distinct from all other animal phyla?
- 7 What do you know about phylum Arthropoda describe the characters and classification of phylum Arthropoda?
- 8 What are some ways to describe phylum Porifera?
- 9 What are members of phylum Porifera commonly called?
- 10 What are the classes of Porifera?
How would you describe Porifera?
: a phylum of primitive invertebrate animals comprising the sponges and having a cellular grade of construction without true tissue or organ formation but with the body permeated by canals and chambers through which a current of water flows and passes in its course through one or more cavities lined with choanocytes.
What is the characteristics of phylum?
Animals
Phylum | Meaning | Distinguishing characteristic |
---|---|---|
Chaetognatha | Longhair jaw | Chitinous spines either side of head, fins |
Chordata | With a cord | Hollow dorsal nerve cord, notochord, pharyngeal slits, endostyle, post-anal tail |
Cnidaria | Stinging nettle | Nematocysts (stinging cells) |
Ctenophora | Comb bearer | Eight “comb rows” of fused cilia |
What early biologists think sponges were?
Since sponges look like plants, it is understandable why early biologists thought they were plants. Today, we know that sponges are simple, multicellular animals in the Kingdom Animalia, Phylum Porifera.
What phylum do sponges belong to?
sponge, any of the primitive multicellular aquatic animals that constitute the phylum Porifera.
What are its major characteristics for of a sponges?
What are the main characteristics of sponges? They are invertebrate animals that usually have no body symmetry and never have tissues or organs. They stay in one place. They reproduce both asexually and sexually.
What are the characteristics of the phylum Arthropoda?
Characteristic features of Phylum Arthropoda
- The body structure shows bilateral symmetry.
- They are triploblastic.
- They can be found in all types of habitats – land, water and soil.
- They have jointed limbs.
- The body is segmented into three regions – Head, Thorax and Abdomen.
How does the name porifera relate to the structure of a sponge?
The name porifera means ‘pore bearer’ in Latin (a pore is a tiny hole). A sponge’s body is covered by a skin, one cell thick. This skin has lots of small pores and a few large openings. These collar cells pump water through the entire sponge and filter out food for the sponge cells to eat.
Why do sponges phylum Porifera represent a separate lineage distinct from all other animal phyla?
Why do sponges represent a separate lineage distinct from all other animal phyla? They lack true tissues. radial symmetry, two phylum Cnidaria and Ctenophora. Comb jellies, all marine, 2 retractable tentacles armed with sticky colloblasts.
How does the name Porifera relate to the structure of a sponge 2 marks?
What do you know about phylum Arthropoda describe the characters and classification of phylum Arthropoda?
General Characteristics of Arthropods They have jointed appendages that help in movements. The body cavity is filled with white coloured blood that is known as haemocoel. The exoskeleton structure is hard and made of complex sugar, namely chitin. Arthropoda species can be both terrestrial and aquatic.
What are some ways to describe phylum Porifera?
There are following characteristics of the phylum Porifera: Their bodies consist of loosely organized cells. They vary in size from less than a centimeter to a mass that can fill your arm. They are asymmetrical or radially symmetrical. They have three cell types: pinacocytes, mesenchyma cells, and choanocytes. They have central cavity or spongocoel. Numerous pores are present in the body wall.
What are unique characteristics of phylum Porifera?
They are generally marine aquatic organisms,with a few freshwater species.
What are members of phylum Porifera commonly called?
Members of the Phylum Porifera are commonly called “sponges”. In terms of body organization they are only slightly more complicated than the unicellular protists, being at what is called the “tissue grade” of organization. This means that their eukaryotic cells are linked together into tissues, but they lack organ systems.
What are the classes of Porifera?
The following points highlight the three main classes of Phylum Porifera. The three classes are: 1. Calcarea or Calcispongiae- (Calcareous Sponges) 2. Hexactinellida or Triaxonida or Hyalospongiae-(Glass Sponge) 3. Demospongiae.