Animal Reproduction and Life Cycles

What is the primary function of the reproductive system in animals?

• To produce gametes and facilitate reproduction.

• To regulate body temperature.

• To filter waste from the blood.

• To provide energy for movement.

Which of the following is NOT a stage in the life cycle of an animal?

• Sleeping

• Hibernating

• Growing

• Mating

What process involves the fusion of sperm and egg?

• Pollination

• Conception

• Ovulation

• Fertilization

In which stage do most animals undergo significant growth and development?

• Embryonic stage

• Juvenile stage

• Larval stage

• Adult stage

What is the term for animals that develop from eggs laid outside the mother's body?

• Ovoviviparous

• Mammalian

• Oviparous

• Viviparous

Which type of reproduction involves only one parent?

• Sexual reproduction

• Asexual reproduction

• Binary fission

• Fragmentation

What is metamorphosis?

• A psychological theory

• A method of cooking

• A type of plant growth

• Metamorphosis is the transformation process in certain animals, like insects and amphibians, from one developmental stage to another.

Which of the following is a characteristic of external fertilization?

• Fertilization requires a mate to be present.

• Fertilization occurs inside the female's body.

• Fertilization occurs outside the female's body.

• Fertilization is limited to terrestrial environments.

What is the role of the placenta in mammalian development?

• The placenta is responsible for the mother's digestion.

• The placenta provides nutrients, gas exchange, waste removal, hormone production, and fetal protection during mammalian development.

• The placenta only serves as a barrier to pathogens.

• The placenta produces milk for the fetus.

Which animal is known for undergoing complete metamorphosis?

• Dog

• Turtle

• Butterfly

• Frog