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Questions and Answers
What is the primary characteristic that differentiates male frogs from female frogs?
What is the primary characteristic that differentiates male frogs from female frogs?
- Males lay eggs in water.
- Males have a pair of ovaries.
- Males have larger bodies.
- Males possess vocal sacs and nuptial pads. (correct)
What type of fertilization occurs in frogs?
What type of fertilization occurs in frogs?
- Internal fertilization with egg laying on land.
- Asexual reproduction.
- External fertilization in water. (correct)
- Internal fertilization in water.
Which of the following statements about frog sperm is true?
Which of the following statements about frog sperm is true?
- Sperm is diploid.
- Sperm does not have a flagellum.
- Sperm is produced in ovaries.
- Sperm is approximately 0.03 mm long. (correct)
What does it mean for frogs to be oviparous?
What does it mean for frogs to be oviparous?
What is the main role of the acrosome in frog sperm?
What is the main role of the acrosome in frog sperm?
Flashcards
Sperm
Sperm
The male reproductive cell that fertilizes the egg.
Separate Sexes in Frogs
Separate Sexes in Frogs
Amphibians like frogs have separate male and female individuals. This means they have distinct sexes.
Amplexus
Amplexus
A process where the male frog attaches to the female's back and releases sperm onto the eggs she lays, resulting in external fertilization.
Tadpole
Tadpole
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Oviparous and Indirect Development
Oviparous and Indirect Development
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Study Notes
Frog Development
- Frogs are anuran amphibians with separate sexes.
- Males have testes and females have ovaries.
- During breeding season, males copulate with females in a process called amplexus.
- Frogs are oviparous, meaning they lay eggs in water.
- Fertilization is external.
- Development is indirect, with a larval stage called a tadpole.
- Frogs exhibit sexual dimorphism, with males being smaller and having vocal sacs and nuptial pads.
Sperm Structure
- Sperm is the male gamete, produced by testes.
- Sperm is haploid.
- Microscopically small, approximately 0.03 mm in length.
- Flagellate type.
- Comprised of a head, mid-piece, and tail.
- The head contains the nucleus.
- The mid-piece contains mitochondria.
- The tail facilitates movement.
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