10 Questions
Qual é o sistema respiratório usado pelos peixes?
Brânquias
O que é desova?
O processo de reprodução dos peixes
Quais são os dois grupos de peixes ósseos?
Aqueles com barbatanas lisas e aqueles com barbatanas espinhosas
Quais são os dois grupos de peixes condríctes?
Aqueles com pulmões e aqueles sem pulmões
O que é o opérculo?
Uma abertura na cabeça dos peixes
O que acontece durante a troca de oxigênio e dióxido de carbono nos peixes?
O oxigênio é absorvido pela água
Quando os peixes evoluíram?
Há 530 milhões de anos
Como a água entra na boca dos peixes?
Através de um fluxo contínuo
Onde os peixes são encontrados?
Em águas salgadas e doces
Quais são as características dos peixes?
Corpo coberto de escamas e respiram com brânquias
Study Notes
- Peixes are vertebrates that live in water and have a body covered in scales.
- Peixes have a respiratory system that uses gills.
- Peixes are found in both salt and fresh water, and have evolved over 530 million years ago during the Devonian period.
- Peixes reproduce through a process called desova. During desova, the female releases her eggs into calm water and the male then releases his sperm onto the eggs.
- Osteichthyes, or fish with well-formed bones, are divided into two groups: those with smooth barbatanas and those with spiny barbatanas.
- Condríctes, or fish without bones, are divided into two groups: those with lungs and those without lungs.
- Peixes ósseos breathe using gills, while cartilaginosous fish breathe through gills that do not have an opérculo and are organized into five or seven pairs.
- A continuous current of water enters through the mouth and bathes the gills for a fraction of a second, while the opérculo remains attached to the trunk, closing the passage to the mouth.
- The exchange of oxygen and carbon dioxide happens while the water is in contact with the gills.
Test your knowledge about peixes, vertebrates that live in water, breathe through gills, and have evolved over 530 million years ago. Learn about their reproductive process, their respiratory systems, and the different classifications of peixes.
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