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Questions and Answers
What is the primary focus of the provided text?
What is the primary focus of the provided text?
How long does it take for amphibian spawn to hatch?
How long does it take for amphibian spawn to hatch?
What determines whether amphibians spend most of their time on land or in water?
What determines whether amphibians spend most of their time on land or in water?
What is the purpose of the arrows on the diagram in the text?
What is the purpose of the arrows on the diagram in the text?
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What is the main difference between reptiles and amphibians?
What is the main difference between reptiles and amphibians?
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Where are the nutrients stored that a frog will need to use once it has all four legs?
Where are the nutrients stored that a frog will need to use once it has all four legs?
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What happens to the embryos once they are fully formed?
What happens to the embryos once they are fully formed?
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Study Notes
Life Cycle of an Amphibian
- Amphibians lay eggs in water, whereas reptiles lay hard-shelled eggs.
- Amphibian eggs are encased in jelly, whereas reptile eggs are not.
- Amphibians are born with gills to breathe underwater, whereas reptiles are born with lungs.
- Amphibians live in or near water for their entire life, whereas reptiles live in a wide range of habitats.
Amphibian Development
- Amphibians lay their eggs (spawn) in water, often near the edge or in shallow areas.
- Frogspawn forms in clumps, while toadspawn is laid in long ribbons.
- Spawn appears in spring, usually in February or March.
- The embryos inside the eggs start to develop over 7-9 days.
- After 14 weeks, the tadpole will start to develop, eating only plants at this time.
Tadpole to Frog
- The tadpole has a head and a tail but no limbs at this point.
- The tadpole uses nutrients stored in the tail to feed.
- As the tail disappears, the tadpole develops all four legs and starts to take on its adult form.
- The nutrients stored in the tail are used to feed the frog once it has all four legs.
- The frog stops eating vegetation and uses the stored nutrients for growth.
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Description
Learn about the life cycle of amphibians, including their similarities and differences with reptiles, and their unique characteristics such as jelly-encased eggs.
