Animal Kingdom Classification

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Questions and Answers

Which phylum exhibits a cellular level of organisation and includes flagellated choanocytes?

Mollusca

Chordata

Porifera (correct)

Echinodermata

What type of symmetry is exhibited by Echinodermata?

Radial symmetry (correct)

Asymmetry

Reflective symmetry

Bilateral symmetry

Which of the following statements is NOT true regarding Chordata?

They have a dorsal hollow nerve cord.

They possess a water vascular system. (correct)

They always exhibit bilateral symmetry.

They have a notochord.

Which type of skeleton is present in Mollusca?

Shell usually present Signup and view all the answers

What distinguishing feature do Hemichordata possess?

Proboscis Signup and view all the answers

Which of the following does NOT belong to the coelomate group?

Porifera Signup and view all the answers

What is a characteristic feature of the Arthropoda?

Jointed appendages Signup and view all the answers

Which of the following is NOT a feature related to the classification of animals?

Presence of fur Signup and view all the answers

What are the two basic body forms exhibited by cnidarians?

Polyp and medusa Signup and view all the answers

What is the primary mode of reproduction for ctenophores?

Sexual reproduction only Signup and view all the answers

Which characteristic is NOT associated with flatworms of the phylum Platyhelminthes?

Body segmented into segments Signup and view all the answers

Which feature aids in the locomotion of ctenophores?

Ciliated comb plates Signup and view all the answers

What type of symmetry do sponges exhibit?

Asymmetrical Signup and view all the answers

Which of the following animals exhibit bilateral symmetry?

Arthropods Signup and view all the answers

What type of symmetry do ctenophores exhibit?

Radial symmetry Signup and view all the answers

What are animals with two embryonic layers called?

Diploblastic Signup and view all the answers

How do polyps reproduce to form medusae in organisms that exhibit metagenesis?

Asexually Signup and view all the answers

What is the function of the mesoderm in triploblastic animals?

It is the additional germinal layer between ectoderm and endoderm Signup and view all the answers

Which of the following is an example of a cnidarian?

Aurelia Signup and view all the answers

Which animals are classified as diploblastic?

Ctenophores Signup and view all the answers

What defines the tissue organization of ctenophores?

Diploblastic Signup and view all the answers

What is the importance of the coelom in the classification of animals?

It denotes the presence or absence of a body cavity Signup and view all the answers

Which of the following has a radial symmetry body plan?

Echinoderms Signup and view all the answers

Which layer is not present in diploblastic animals?

Mesoderm Signup and view all the answers

What distinguishes reptiles from amphibians regarding their skin?

Reptiles have dry and cornified skin Signup and view all the answers

Which characteristic is unique to Aves compared to other classes mentioned?

Presence of feathers Signup and view all the answers

Which of the following reptiles has a four-chambered heart?

Crocodilus Signup and view all the answers

What is the main method of reproduction for reptiles?

Oviparous with direct development Signup and view all the answers

What feature allows birds to maintain a constant body temperature?

Being warm-blooded Signup and view all the answers

Which of the following is an example of an amphibian?

Bufo Signup and view all the answers

What is one of the common locomotion characteristics of reptiles?

They crawl or creep Signup and view all the answers

Which structure in birds is modified for flight?

Forelimbs Signup and view all the answers

What type of symmetry do molluscs exhibit?

Bilateral symmetry Signup and view all the answers

Which of the following is NOT a characteristic of molluscs?

Looping body segments Signup and view all the answers

What is the function of the radula in molluscs?

Rasping food Signup and view all the answers

What are the common examples of economically important insects from the Arthropoda phylum?

Butterflies and honey bees Signup and view all the answers

Which of the following correctly describes the mantle in molluscs?

It covers the visceral hump. Signup and view all the answers

What does it mean that molluscs are dioecious?

They have separate male and female individuals. Signup and view all the answers

Which of the following is considered a 'living fossil' in the context of arthropods?

King crab Signup and view all the answers

What role does the mantle cavity serve in molluscs?

It houses the gills for respiration. Signup and view all the answers

Study Notes

### Animal Kingdom Classification

Porifera are multicellular animals with cellular level of organization and flagellated choanocytes.
Coelenterata have tentacles and cnidoblasts.
Sponges are mostly asymmetrical.
Radial Symmetry exists in organisms where any plane passing through the central axis divides the organism into two identical halves.
Bilateral Symmetry exists in organisms where the body can be divided into identical left and right halves in only one plane.
Diploblastic Animals have cells arranged in two embryonic layers: an external ectoderm and an internal endoderm.
Triploblastic Animals have a third germinal layer, mesoderm, between the ectoderm and endoderm.
Coelom is a body cavity lined by mesoderm.
Cnidarians have a skeleton composed of calcium carbonate.
Cnidarians exhibit two basic body forms: polyp and medusa.
Polyp is a sessile and cylindrical form, like Hydra.
Medusa is an umbrella-shaped and free-swimming form, like Aurelia.
Alternation of Generation (Metagenesis) exists in cnidarians exhibiting both polyp and medusa forms, where polyps produce medusae asexually, and medusae form polyps sexually.
Ctenophores are exclusively marine, radially symmetrical, diploblastic organisms.
Ctenophores have eight external rows of ciliated comb plates for locomotion.
Bioluminescence, the property of emitting light, is common in ctenophores.
Platyhelminthes have a dorso-ventrally flattened body and are called flatworms.
Platyhelminthes are bilaterally symmetrical, triploblastic, and acoelomate animals.
Arthropoda have a jointed exoskeleton of chitin, complete digestive system, and an open circulatory system.
Mollusca are soft-bodied animals with a calcareous shell, unsegmented body, and a mantle cavity.
Mollusca have a file-like rasping organ called a radula for feeding.
Echinodermata have a water vascular system and radial symmetry.
Hemichordata have a worm-like body with a proboscis, collar, and trunk.
Chordata have a notochord, dorsal hollow nerve cord, gill slits, and limbs or fins.
Amphibia are cold-blooded vertebrates that live in both aquatic and terrestrial environments.
Reptilia are mostly terrestrial animals with dry and cornified skin, epidermal scales, or scutes.
Reptilia have a three-chambered heart (except crocodiles which have a four-chambered heart).
Aves (birds) are characterized by feathers, beaks, and wings.
Aves have a four-chambered heart and are warm-blooded.

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Description

Explore the fascinating world of Animal Kingdom classification in this quiz. Dive into the characteristics of various animal phyla, including Porifera and Coelenterata, while learning about symmetry and body organization. Test your knowledge on triploblastic and diploblastic organisms as well as their different forms.