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.
In most mammals, where does fertilization usually occur?
Name one mammal that lays eggs.
Name the process by which the zygote divides repeatedly to form a multicellular embryo.
State one advantage of sexual reproduction over asexual reproduction in animals.
State one example of a hermaphroditic animal.
What is the main difference between oviparous and viviparous animals?
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.
Describe two ways in which sexual reproduction in animals can be affected by environmental factors, providing examples for each.
During the process of fertilization in animals, what prevents more than one sperm from fertilizing the same egg?
Explain how the process of crossing over during meiosis contributes to genetic diversity in sexually reproducing animals.
Explain why some animals exhibit seasonal breeding and how this is advantageous for the survival of their offspring.
