13.3 Nervous, Reporductive Systems, Class Agnatha

What is internal fertilization and which vertebrates commonly use this method of fertilization?

• Process by which the female lays eggs and the male fertilizes them once they are outside the female, aquatic vertebrates

• Process by which male places sperm inside the female's body, where eggs are fertilized, land-dwelling vertebrates

• Process by which both male and female gametes are released into the water, marine vertebrates

• Process by which eggs develop a shell after being laid by the female, land-dwelling vertebrates

What is a characteristic of an internally fertilized egg?

• It has no shell

• It is fertilized outside the female's body

• It is laid in water

• It has a shell

What is external fertilization and which vertebrates are most likely to use this type of fertilization?

• Process by which the female lays eggs and the male fertilizes them once they are outside the female, aquatic vertebrates

• Process by which male places sperm inside the female's body, where eggs are fertilized, land-dwelling vertebrates

• Process by which both male and female gametes are released into the water, aquatic vertebrates

• Process by which eggs develop a shell after being laid by the female, land-dwelling vertebrates

What type of development occurs in an egg that is hatched outside the female's body?

• Viviparous development

• Ovoviviparous development

• Oviparous development

• None of the above

Which type of development is characterized by the offspring gaining nutrients and vital substances from the mother through a placenta?

• Oviparous development

• Ovoviviparous development

• Viviparous development

• None of the above

Which group of animals is most commonly associated with oviparous development?

• Guppies

• Most mammals

• Most birds

• None of the above

Although an animal's eyes seem to function properly, it still cannot see. What part of the brain is most likely not working?

• Cerebellum

• Occipital lobe

• Frontal lobe

• Parietal lobe

A viviparous mother eats plenty of food but the developing offspring is not nourished properly. What structure is not performing its job?

• Placenta

• Amniotic sac

• Umbilical cord

• Ovary

What term describes the life cycle of Class Agnatha organisms where they hatch in fresh water, migrate to salt water as adults, and then return to fresh water to reproduce?

• Diadromous

• Anadromous

• Catadromous

• Amphidromous

What type of mouth does an adult lamprey have?

• A beaked, jawed mouth

• A round suckerlike, jawless mouth

• A large mouth with sharp teeth

• A small, beak-like mouth