'External fertilization' diaporamas de présentation

Chapter 46

Chapter 46. Animal Reproduction. Overview: Pairing Up for Sexual Reproduction. Each earthworm produces sperm and eggs; in a few weeks, new worms will hatch from fertilized eggs. Animal reproduction takes many forms.

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Vertebrate Classes All in Chordate Phylum

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Class Gastropoda

Class Gastropoda. Snails - largest class of molluscs ~ 85,000 living spp. ~ 15,000 fossil spp. Habitats: marine benthos, ocean plankton, freshwater, land. After torsion. Gastropod characteristics. 1. Torsion - primitive bilateral symmetry lost during development

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Chapter 48

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LIFE HISTORY PATTERNS

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B5: Reproduction

B5: Reproduction. Miss Friedman IGCSE Science. Internal Fertilization. Where fusion of male and female gamete takes place inside the body Male gamete (sperm) are mobile and move to meet the stationary female gamete (egg)

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JUST VOCAB

JUST VOCAB. REPTILES Chapters 43. Allantois. albumen. Membrane sac in an amniotic egg ____________________ that exchanges gases and stores nitrogen waste The proteins and water stored in ____________________ an amniotic egg Membrane sac in an amniotic egg __________________

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Concept Map

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Phylum: Mollusca

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Animal Reproduction

Animal Reproduction. Overview Mechanisms of Sexual Reproduction Mammalian Reproduction. Overview. Asexual vs Sexual, when? Fission, fragmentation, budding Parthenogenesis-development of the egg without fertilization Hermaphroditism, most do not self fertilize, what evolutionary value?

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Sharks on the Move

Sharks on the Move. How migration, nursery habitat, and fisheries affect populations of an apex predator. Nbc6.net. Charles Bangley Coastal Resources Management Program, East Carolina University. Presentation Outline. Reproductive Strategies of Marine Animals. Nursery Habitat Overview .

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Sexual Reproduction

Sexual Reproduction. 6.2. Methods of Fertilization. Sperm and Egg cell unite outside of the bodies of the parents. If a sperm cell comes in contact with an egg cell of the species, fertilization may occur. Fertilized eggs not protected.

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Sexual versus Asexual Reproduction

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Chondrichthyans

Chondrichthyans. Dan Fitzpatrick & Elizabeth Ezrike. Major Classes. Holocepheli. Elasmobranchii. Examples Of Species. Great White Shark Manta Ray Tiger Shark. General Facts. Live in marine conditions. More specifically, they live in oceans as well as sand, mud, reefs, and rivers.

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811

811. : Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions. Analyze data on levels of variation within a population to make predictions about survival under particular environmental conditions.

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Internal vs External Fertilization & Development

Internal vs External Fertilization & Development. Fertilization. Fertilization is the union of egg and sperm Egg (n) + Sperm (n) = zygote 2n. External Fertilization. External fertilization occurs outside of female parent Fish Amphibians Aquatic vertebrates. External Fertilization.

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Phyla : Arthropoda

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