Sexual Reproduction in Animals
Biology ⇒ Reproduction and Development
Sexual Reproduction in Animals starts at 7 and continues till grade 12.
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Describe the process of copulation in animals and its significance in sexual reproduction.
Describe the role of meiosis in sexual reproduction in animals.
Describe the role of the uterus in the development of the embryo in mammals.
Explain the difference between internal and external fertilization in animals.
Explain why external fertilization is more common in aquatic animals than in terrestrial animals.
Explain why genetic variation is important in sexually reproducing populations.
Explain why parental care is more common in animals with internal fertilization.
A scientist observes that a certain fish species releases thousands of eggs and sperm into the water, but only a few offspring survive to adulthood. Explain the evolutionary advantage of producing such a large number of gametes in this species.
Which of the following animals exhibits external fertilization?
(1) Dog
(2) Frog
(3) Cow
(4) Cat
Which of the following animals is oviparous?
(1) Human
(2) Cow
(3) Hen
(4) Whale
Which of the following best describes the function of gametes?
(1) To provide energy for the cell
(2) To carry genetic information for reproduction
(3) To digest food
(4) To protect the body from disease
Which of the following is a benefit of internal fertilization?
(1) Higher risk of gamete desiccation
(2) Greater protection for the developing embryo
(3) Less parental care required
(4) Lower chance of fertilization
Fill in the blank: Animals that produce both eggs and sperm are called __________.
Fill in the blank: The female gamete in animals is called __________.
Fill in the blank: The fusion of male and female gametes results in the formation of a __________.
Fill in the blank: The male gamete in animals is called __________.
True or False: All animals reproduce sexually.
True or False: All mammals are viviparous.
True or False: Fertilization in animals always occurs inside the female body.
True or False: Fertilization restores the diploid number of chromosomes in animals.
