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Questions and Answers
Which of the following is a characteristic feature of animals based on the text?
Which of the following is a characteristic feature of animals based on the text?
- Asymmetrical structure with no pattern or symmetry (correct)
- Asymmetrical structure with clear front and back
- Bilateral symmetry with no clear differentiation of sides
- Radial symmetry with no distinct front or back
What is the estimated number of living animal species as per the text?
What is the estimated number of living animal species as per the text?
- 6.8 million
- 1.4 million (correct)
- 3.2 million
- 600,000
When did animal evolution begin according to the text?
When did animal evolution begin according to the text?
- approximately 1 billion years ago
- around 200 million years ago
- 1 million years ago
- over 600 million years ago (correct)
Which group of organisms shows examples of both sexual and asexual reproduction based on the text?
Which group of organisms shows examples of both sexual and asexual reproduction based on the text?
What distinguishes bilateral symmetry from radial symmetry in animals?
What distinguishes bilateral symmetry from radial symmetry in animals?
Which kingdom do animals belong to according to the text?
Which kingdom do animals belong to according to the text?
Which phylum includes animals with radial or biradial symmetry and are diploblastic?
Which phylum includes animals with radial or biradial symmetry and are diploblastic?
Which group of animals contains cnidocytes?
Which group of animals contains cnidocytes?
Which class is NOT part of the phylum Cnidaria?
Which class is NOT part of the phylum Cnidaria?
Which body plans are displayed by cnidarians?
Which body plans are displayed by cnidarians?
Which group of flatworms is mostly made up of external parasites of fish?
Which group of flatworms is mostly made up of external parasites of fish?
Which germ layers give rise to surfaces covering tissues, internal tissues, and the lining of the digestive system in flatworms?
Which germ layers give rise to surfaces covering tissues, internal tissues, and the lining of the digestive system in flatworms?
Which phylum includes the classes Polychaeta and Clitellata?
Which phylum includes the classes Polychaeta and Clitellata?
Why are Echinoderms named as such?
Why are Echinoderms named as such?
Which is not a class of Echinoderms?
Which is not a class of Echinoderms?
How many key features do Chordates share during some stage of their development?
How many key features do Chordates share during some stage of their development?
Where are lancelets usually found?
Where are lancelets usually found?
What is the subphylum that includes vertebrates?
What is the subphylum that includes vertebrates?
What is the main distinguishing characteristic of all animals in the phylum Arthropoda?
What is the main distinguishing characteristic of all animals in the phylum Arthropoda?
Which phylum includes tapeworms, primarily internal parasites of vertebrates?
Which phylum includes tapeworms, primarily internal parasites of vertebrates?
How many classes make up the phylum Mollusca?
How many classes make up the phylum Mollusca?
What is the estimated number of parasitic species within the phylum Nematoda?
What is the estimated number of parasitic species within the phylum Nematoda?
Which subphylum of Arthropoda includes insects and their relatives?
Which subphylum of Arthropoda includes insects and their relatives?
What is the primary habitat where Annelida, or segmented worms, are found?
What is the primary habitat where Annelida, or segmented worms, are found?
What characteristic do tunicates and the organisms mentioned in the text share?
What characteristic do tunicates and the organisms mentioned in the text share?
How many species of modern fishes are estimated to exist?
How many species of modern fishes are estimated to exist?
Which group of vertebrates have both cartilaginous and bony fishes?
Which group of vertebrates have both cartilaginous and bony fishes?
Which class of vertebrates does the largest number of present-day fishes belong to?
Which class of vertebrates does the largest number of present-day fishes belong to?
What are amphibians known for among vertebrate tetrapods?
What are amphibians known for among vertebrate tetrapods?
What distinguishes members of the clade Osteichthyes?
What distinguishes members of the clade Osteichthyes?
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