Fish Classes Introduction

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What is the smallest fish mentioned in the text?

Stout infantfish (correct)

Pygmy goby

Walking catfish

Mangrove killifish

What are fish ribs primarily used for?

Supporting fins (correct)

Breathing

Balancing

Swimming

Which fins are considered as part of the 'appendicular skeleton' in fish?

Pectoral and caudal fins

Caudal and pectoral fins

Pectoral and pelvic fins (correct)

Dorsal and ventral fins

What is the main function of segmented muscles in fish?

Swimming Signup and view all the answers

Which fish can be found stuffed into insect tracks in rotting logs when the mangrove swamps dry up?

Mangrove killifish Signup and view all the answers

What is the common feature of fish muscles related to movement?

Segmented into zig-zag bands Signup and view all the answers

Which of these is NOT a characteristic of fish?

Terrestrial and adapted for land-based life Signup and view all the answers

Approximately how many new fish species are described each year?

200 Signup and view all the answers

What is the estimated percentage of fish species in the Amazon river basin that have been collected and described?

33% Signup and view all the answers

When did the first true vertebrates appear in the fossil record?

530 million years ago Signup and view all the answers

Which of the following was NOT a characteristic of the first fish that appeared over 500 million years ago?

Developed heavy bony armor and roamed in this form for over 20 million years Signup and view all the answers

Fish Classes Introduction

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Questions and Answers

What is the smallest fish mentioned in the text?

What are fish ribs primarily used for?

Which fins are considered as part of the 'appendicular skeleton' in fish?

What is the main function of segmented muscles in fish?

Which fish can be found stuffed into insect tracks in rotting logs when the mangrove swamps dry up?

What is the common feature of fish muscles related to movement?

Which of these is NOT a characteristic of fish?

Approximately how many new fish species are described each year?

What is the estimated percentage of fish species in the Amazon river basin that have been collected and described?

When did the first true vertebrates appear in the fossil record?

Which of the following was NOT a characteristic of the first fish that appeared over 500 million years ago?

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