Learning Activity - Life Cycle of Animals

antiporda, bautista, guce

Reproduction

Asexual

Sexual

• Requires two parents
• Internal fertilization
• Wider variety of species

• Can produce alone
• Parthenogenesis
• Limited variety of species

• Produces offspring
• Preserves their species

Life Cycle of a Shark

Adult Shark

eggs

young shark

newborn

ovoviviparity

References

References

• Admin. (2022). Reproduction in animals - sexual and asexual reproduction. BYJUS. https://byjus.com/biology/reproduction-in-animals/

• Sutton, C. (2016, March 12). Shark Life Cycle - KidsPressMagazine.com. Pinterest. https://www.pinterest.ph/pin/494621971558456371/

Fertilization

After mating, sharks start the first phase of the life cycle which is the fertilization of the formed eggs.

Growth

Like other organisms, sharks go through growing phase before adulthood. This is when they start to be independent and separate from their parents.

Adulthood

Finally, sharks reach the final stage and is now ready for reproduction and repeat the same process all over again.

Reproduction

Reproduction is the process of producing individuals of the same kind. Depending on the number of parents involved, there are different modes of reproduction. In animals is two types of reproduction:

1. Sexual Reproduction2. Asexual Reproduction

Sharks have a specific life cycle with several stages of development, growth, and reproduction. They have two different reproductive methods: oviparous, in which the eggs are placed outside the mother's body and hatch externally, and viviparous, in which the embryos grow inside the mother and are delivered alive. Young sharks move into the growth stage after being born or hatching, during which they consume smaller prey and develop rapidly. Depending on the species, this phase can persist for several years. Sharks have a multiple of developmental changes as they grow, which helps them adapt to their environment and develop into effectual predators. Sharks continue to develop and reproduce throughout their lives, and some species can live exceptionally long lives and grow to vast sizes, which makes them an essential part of marine ecosystems.

Ways Sharks Reproduce

Ovoviviparous

Oviparous

Viviparous

producing young by means of eggs which are hatched within the body of the parent

gives birth to developed live young

producing eggs that develop and hatch outside the maternal body

Birth

When sharks are born, they are usually left by their parents. Newborn sharks also practice their survival and safety skills during this phase.