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Life Cycles and Classification of Animals

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Life Cycles and Classification of Animals

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Questions and Answers

Which animals are cold-blooded vertebrates?

Fishes, amphibians, reptiles (correct)

Birds, reptiles, fish

Mammals, birds

Mammals, amphibians, birds

What distinguishes warm-blooded vertebrates from cold-blooded vertebrates?

Cold-blooded vertebrates keep constant body temperatures.

Warm-blooded vertebrates have fluctuating body temperatures.

Warm-blooded vertebrates keep constant body temperatures. (correct)

Cold-blooded vertebrates have constant body temperatures.

Which animals are included in the group of amphibians?

Herring, salmon

Robin, parrot

Crocodile, turtle

Frog, toad (correct)

What is common among most animals regarding reproduction?

Most animals lay eggs. Signup and view all the answers

What is a characteristic of the young ones (nymph) of some insects like the cockroach?

They look like their parents but are smaller. Signup and view all the answers

Which of the following are not warm-blooded vertebrates?

Reptiles Signup and view all the answers

Study Notes

Life Cycles of Animals

The life cycle of an organism refers to the sequence of developmental stages from birth to adulthood.
Animals need to eat, grow, be safe, and produce young ones as part of their life cycle.
All animals reproduce young of the same kind.

Classification of Animals by Reproduction

Mammals: no egg-laying
Birds: some egg-laying
Reptiles: no egg-laying
Amphibians: quite likely to lay eggs
Fish: some egg-laying (e.g. salmon and trout)

Characteristics of Vertebrates

Cold-blooded vertebrates (fish, amphibians, and reptiles): body temperatures change with surroundings
Warm-blooded vertebrates (birds and mammals): body temperatures remain almost constant, unaffected by surroundings

Insect Life Cycle

Life Cycle of the Cockroach

Young ones (nymphs) resemble parents, but are smaller
Cockroach nymphs go through a developmental stage before reaching adulthood

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Description

Learn about the life cycles of animals, including the sequence of developmental stages from birth to adulthood, and classify animals based on their reproductive methods.