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Animal Diversity Overview Quiz

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Questions and Answers

What defines animals as multicellular organisms?

They are eukaryotic and develop from embryonic layers

They have a long sticky tongue for capturing prey

They use strength, speed, toxins, or camouflage to detect and capture food

They lack cell walls and have unique nervous and muscle tissues (correct)

What is a defining characteristic of animals' cell structure?

Being eukaryotic and heterotrophic

Having a long sticky tongue for capturing prey

Lack of cell walls and presence of collagen holding their bodies together (correct)

Using strength, speed, toxins, or camouflage to detect and capture food

What is the nutritional mode of animals?

They are heterotrophs that ingest their food (correct)

They use strength, speed, toxins, or camouflage to detect and capture food

They have a long sticky tongue for capturing prey

They have unique nervous and muscle tissues

What distinguishes animals from other life forms?

Multicellularity, heterotrophic nature, and development from embryonic layers Signup and view all the answers

What is a unique defining characteristic of animals' tissues?

Nervous tissue and muscle tissue Signup and view all the answers

What stage follows after cleavage in the development of an animal embryo?

Blastula Signup and view all the answers

What is the sexually immature and morphologically distinct stage that eventually undergoes metamorphosis to become a juvenile?

Larva Signup and view all the answers

Which genes regulate the development of body form in animals?

Hox genes Signup and view all the answers

What is the closest living relative to animals, based on morphological and molecular evidence?

Choanoflagellates Signup and view all the answers

Which group of protists is considered as the closest living relatives to animals?