Kingdom Animalia: Phylum Summaries

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Questions and Answers

Which phylum is characterized by asymmetrical body type?

Cnidaria

Nematoda

Porifera (correct)

Annelida

What type of symmetry do Platyhelminthes have?

Asymmetry

Spherical symmetry

Bilateral symmetry (correct)

Radial symmetry

Which of the following includes organisms that are primarily parasitic?

Annelida

Cnidaria

Nematoda (correct)

Porifera

Which ecological role is associated with the Phylum Cnidaria?

Food source and reef home Signup and view all the answers

What is a common example of Annelida?

Earthworm Signup and view all the answers

Which animal phylum demonstrates bilateral symmetry?

Mollusca Signup and view all the answers

What type of digestive system is present in both Mollusca and Arthropoda?

Mouth and anus Signup and view all the answers

Which reproduction method is NOT associated with Cnidaria?

Sexual - dioecious Signup and view all the answers

What is the primary method of respiration for organisms in the phylum Echinodermata?

Diffusion through skin Signup and view all the answers

How many germ layers are present in animals classified within Animalia?

3 Signup and view all the answers

What is unique about the body cavity of the phylum Arthropoda?

Coelom Signup and view all the answers

What type of nervous system is present in Mollusca?

Brain and nerves Signup and view all the answers

Which of the following is a method of excretion in Arthropoda?

Nephridia Signup and view all the answers

Which phylum is characterized by tube feet and a water vascular system?

Echinodermata Signup and view all the answers

In which of the following phyla do you find organisms that can regenerate lost parts?

Echinodermata Signup and view all the answers

What type of body organization is found in organisms of the phylum Cnidaria?

Acoelomate Signup and view all the answers

What is a common ecological role of organisms in the phylum Mollusca?

Food source Signup and view all the answers

Which type of body symmetry is displayed by Echinodermata primarily as adults?

Radial symmetry Signup and view all the answers

What reproductive strategy do most bivalves in the phylum Mollusca use?

Sexual - dioecious Signup and view all the answers

Study Notes

Kingdom Animalia: Phylum Summaries

Porifera (Sponges):
- Body type: Asymmetrical
- Ecological role: Food source, shelter, symbiotic with bacteria
- Body organization: 2 germ layers (ectoderm, endoderm)
- Body cavity: Acoelom
- Digestive system: Filter feeding, collar cells, food vacuoles, osculum
- Reproduction: Sexual (releasing gametes in water), asexual (budding, branching, fragmentation)
- Circulation: Diffusion
- Nervous system: None
- Respiration: Diffusion
- Excretion: Diffusion
- Habitat: Water (lakes, oceans)
Cnidaria (Jellyfish, Hydra, Corals):
- Body type: Radial symmetry
- Ecological role: Reef homes, protection of shores, chemical anticancer agents
- Body organization: 2 germ layers (ectoderm, endoderm); mesoglea between
- Body cavity: Acoelom
- Digestive system: Gastrovascular cavity, mouth, nematocysts (to capture food)
- Reproduction: Sexual (hermaphroditic, cross-fertilization), asexual (budding, regeneration)
- Circulation: Diffusion
- Nervous system: Nerve net
- Respiration: Diffusion
- Excretion: Diffusion
- Habitat: Water (oceans)
Platyhelminthes (Flatworms):
- Body type: Bilateral symmetry
- Ecological role: Parasitic, eating dead animals, saprophytes
- Body organization: 3 germ layers (ectoderm, mesoderm, endoderm)
- Body cavity: Acoelom
- Digestive system: mouth and gastrovascular cavity; mouth also serves as anus
- Reproduction: Sexual (hermaphroditic, cross-fertilization), asexual (fragmentation)
- Circulation: Diffusion
- Nervous system: Cephalization (brain), nerves
- Respiration: Diffusion
- Excretion: Diffusion
- Habitat: Soil, water
Nematoda (Roundworms):
- Body type: Bilateral symmetry
- Ecological role: Parasitic, aerating soil, breakdown material
- Body organization: 3 germ layers (ectoderm, mesoderm, endoderm)
- Body cavity: Pseudocoelom
- Digestive system: Complete digestive system (mouth and anus)
- Reproduction: Sexual (separate sexes, dioecious or hermaphroditic, cross-fertilization)
- Circulation: Diffusion
- Nervous system: Simple nervous system with nerves
- Respiration: Diffusion through skin
- Excretion: Diffusion through skin
- Habitat: Soil, water
Annelida (Segmented Worms):
- Body type: Bilateral symmetry
- Ecological role: Aerating soil, breakdown of material
- Body organization: 3 germ layers (ectoderm, mesoderm, endoderm)
- Body cavity: Coelom
- Digestive system: Complete digestive system (mouth and anus)
- Reproduction: Sexual (hermaphroditic and cross-fertilization)
- Circulation: Closed system with blood vessels
- Nervous system: Well-developed nervous system (brain, ganglia, nerves)
- Respiration: Diffusion through skin and/or gills (depending on the species)
- Excretion: Nephridia
- Habitat: Soil, water (some aquatic)
Mollusca (Snails, Clams, Squid):
- Body type: Bilateral symmetry
- Ecological role: Food source, predator control, filter feeding (in some species)
- Body organization: 3 germ layers (ectoderm, mesoderm, endoderm)
- Body cavity: Coelom
- Digestive system: Complete digestive system (mouth & anus), some have radula for feeding
- Reproduction: Sexual (dioecious or hermaphroditic), some with trochophore larvae
- Circulation: Open (most species) or closed (cephalopods)
- Nervous system: Nerves, brain (more developed in cephalopods)
- Respiration: Gills in aquatic species, lungs in terrestrial species or mantle cavity
- Excretion: nephridia
- Habitat: Water (most species), some are terrestrial
Echinodermata (Sea Stars, Sea Urchins):
- Body type: Radial symmetry
- Ecological role: Food source, control of animal and algae populations, recycling nutrients and antiviral/anticancer compounds
- Body organization: 3 germ layers (ectoderm, mesoderm endoderm)
- Body cavity: Coelom
- Digestive system: Complete digestive system (mouth and anus)
- Reproduction: Sexual (dioecious), some with asexual regeneration
- Circulation: Closed system with water vascular system
- Nervous system: Nerve net, simple brain
- Respiration: Tube feet and gills
- Excretion: Tube feet, gills
- Habitat: Water (oceans)
Arthropoda (Insects, Crustaceans, Spiders):
- Body type: Bilateral symmetry
- Ecological role: Diverse roles, predators, pollinators, parasites, food source
- Body organization: 3 germ layers (ectoderm, mesoderm, endoderm)
- Body cavity: Coelom
- Digestive system: Complete digestive system with mouth & anus
- Reproduction: Sexual (dioecious), various reproductive strategies
- Circulation: Open system with hearts and hemolymph
- Nervous system: Brain, nerves, ganglia
- Respiration: Tracheal systems (insects), gills (some aquatic), book lungs (spiders)
- Excretion: Malpighian tubules or other excretory structures
- Habitat: Diverse, both terrestrial and aquatic

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Description

Explore the fascinating characteristics and ecological roles of various phyla within Kingdom Animalia. This quiz covers the essential features of Porifera, Cnidaria, and other phyla, including their body organization, reproductive methods, and habitat. Test your knowledge on this vital aspect of biology!