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Questions and Answers
Which animals are cold-blooded vertebrates?
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?
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?
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?
What is common among most animals regarding reproduction?
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What is a characteristic of the young ones (nymph) of some insects like the cockroach?
What is a characteristic of the young ones (nymph) of some insects like the cockroach?
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Which of the following are not warm-blooded vertebrates?
Which of the following are not warm-blooded vertebrates?
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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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