6 Questions
Which animals are cold-blooded vertebrates?
Fishes, amphibians, reptiles
What distinguishes warm-blooded vertebrates from cold-blooded vertebrates?
Warm-blooded vertebrates keep constant body temperatures.
Which animals are included in the group of amphibians?
Frog, toad
What is common among most animals regarding reproduction?
Most animals lay eggs.
What is a characteristic of the young ones (nymph) of some insects like the cockroach?
They look like their parents but are smaller.
Which of the following are not warm-blooded vertebrates?
Reptiles
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
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.
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