Bidder’s canal is present in

🔑 Key Points
🦎 Frog Sexual Dimorphism
→ The frog shows sexual dimorphism.
→ Its male and female can be distinguished by their external appearance.
→ Bidder's canal is present in frogs.
→ It is part of the male reproductive system.
→ It is part of vasa efferentia.
→ It helps in the passage of sperm.

📝 Additional Information
🐛 Earthworm
→ It is hermaphrodite.
→ Male and female gonads are present in the same individual.
→ It lays eggs.

🧽 Spongilla
→ It is a freshwater sponge.
→ It is hermaphrodite.
→ Male and female sex organs are present inside, showing internal fertilization.

🐞 Cockroach
→ It exhibits sexual dimorphism.
→ Male and female reproductive organs are well-developed.
→ It lays eggs.

⭐ Asterias (Starfish)
→ It shows external fertilization.
→ Females release eggs in water, and males release sperm in the water.