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Questions and Answers
What is the main characteristic feature of Platyhelminthes?
What is the main characteristic feature of Platyhelminthes?
Which phylum consists of roundworms with a false body cavity?
Which phylum consists of roundworms with a false body cavity?
What is a distinguishing feature of Annelids?
What is a distinguishing feature of Annelids?
Which phylum is known for animals with jointed legs?
Which phylum is known for animals with jointed legs?
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Which phylum includes both free-living and parasitic organisms?
Which phylum includes both free-living and parasitic organisms?
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What type of symmetry do Arthropods exhibit?
What type of symmetry do Arthropods exhibit?
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Which phylum is characterized by having a typically open circulatory system?
Which phylum is characterized by having a typically open circulatory system?
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What is the main characteristic that defines echinoderms?
What is the main characteristic that defines echinoderms?
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Which phylum has worm-like marine animals with an open circulatory system?
Which phylum has worm-like marine animals with an open circulatory system?
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What is a unique feature of Phylum Chordata?
What is a unique feature of Phylum Chordata?
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Which phylum has animals with true coelom and a hard calcium carbonate skeleton structure?
Which phylum has animals with true coelom and a hard calcium carbonate skeleton structure?
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What distinguishes Phylum Hemichordata from the other phyla mentioned in the text?
What distinguishes Phylum Hemichordata from the other phyla mentioned in the text?
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What is the defining characteristic of animals in Kingdom Animalia?
What is the defining characteristic of animals in Kingdom Animalia?
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What is a common feature of the Phylum Porifera (Sponges)?
What is a common feature of the Phylum Porifera (Sponges)?
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From the given Phyla, which one exhibits a heterotrophic mode of nutrition?
From the given Phyla, which one exhibits a heterotrophic mode of nutrition?
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What is the meaning of 'Coelenterata' derived from the Greek word 'kilos'?
What is the meaning of 'Coelenterata' derived from the Greek word 'kilos'?
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Which Phylum in the animal kingdom is commonly known as Sponges?
Which Phylum in the animal kingdom is commonly known as Sponges?
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What distinguishes Kingdom Animalia from plants regarding nutrition?
What distinguishes Kingdom Animalia from plants regarding nutrition?
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Study Notes
Phylum Mollusca
- Bilaterally symmetrical and triploblastic
- Less segmented body
- Well-developed organ and organ system
- Typically, open circulatory system
- Limbs are present
- Examples: Snails, Octopus
Phylum Echinodermata
- Radial symmetry and triploblastic
- Have true coelom
- Hard calcium carbonate skeleton structure
- Free-living marine animals
- Examples: Sea Urchins, Starfish
Phylum Hemichordata
- Soft, fragile, and divided into a proboscis
- Single-layered epidermis
- Worm-like marine animals with an organ-system level of organization
- Open circulatory system
- Respire through gills
- Separate sexes and external fertilization
- Development is direct
- Examples: Acorn Worms, Cephalodiscus
Phylum Chordata
- Bilaterally symmetrical, triploblastic with an organ-system level of classification
- Possess a notochord and a nerve cord
- Closed circulatory system
- Sub-phyla: Urochordata, Cephalochordata, Vertebrata
- Examples: Reptiles, Mammals
Phylum Platyhelminthes
- Dorsoventrally flattened body
- Complex and differentiated body structure
- Tissues are differentiated from three layers of cells and are triploblastic
- No true internal cavity or coelom
- Bilateral symmetry
- Either free-living (Planaria) or parasitic (liver flukes)
- Examples: Tapeworm, Planaria
Phylum Nematoda
- Cylindrical body
- Bilaterally symmetrical and triploblastic
- Pseudocoelom, a false body cavity
- Parasitic and causes diseases such as elephantiasis, ascariasis
- Examples: Ascaris, Wuchereria
Phylum Annelida
- Segmented cylindrical body
- Body is differentiated into head and tail
- Bilaterally symmetrical and triploblastic
- True body cavity
- Habitat: marine, freshwater, and land
- Examples: Earthworm, Leech
Phylum Arthropoda
- Jointed appendages
- Segmented body
- Bilaterally symmetrical
- Exoskeleton and a true body cavity
- Well-differentiated organ and organ system
- Open circulatory system, but no differentiated blood vessels
- Examples: Spiders, Butterflies, Mosquitoes
Kingdom Animalia
- Multicellular eukaryotes
- Heterotrophic mode of nutrition
- No chlorophyll or cell wall
- Classified into ten different subphyla
- Phyla: Porifera, Coelenterata (Cnidaria), Platyhelminthes, Nematoda, Annelida, Arthropoda, Mollusca, Echinodermata, Hemichordata, Chordata
Phylum Porifera
- Non-motile, multicellular organisms with a hard outer skeleton
- Porous body
- Pores on the body create a canal system for substance circulation
- Not differentiated into head and tail
- No well-developed organ or organ system
- Marine habitat
- Examples: Spongilla, Sycon
Phylum Coelenterata (Cnidaria)
- Hollow body cavity
- Body is differentiated into two ends
- Aquatic animals
- Body made of two layers of cells: inner and outer linings
- Live in colonies (corals) as well as solitary (Sea anemone)
- Examples: Hydra, Jellyfish
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Description
Explore the classification of Kingdom Animalia into different subphyla based on body design and differentiation. Learn about the characteristics and diversity of animals within the largest kingdom.
