Oviparity - PowerPoint PPT Presentation

Oceanic Nekton

Oceanic Nekton. Nekton --- those organisms that have developed powers of locomotion so that they are not at the mercy of prevailing ocean currents or wind-induced water motion . . Major zones of life in a marine ecosystem. General characteristics of nekton. Larger body size

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359 views • 25 slides

The Vertebrates

The Vertebrates. The “Fish”. Actually made up of 6 vertebrate classes Hagfish eel-like w/o jaws, paired fins or bone. No vertebrae either Lamprey like a hagfish but with a primate vertebral column of cartilage. Cartilaginous fish Shark, rays, skates and ratfish

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246 views • 20 slides

Reproductive strategies for Survival

Reproductive strategies for Survival. How many, and how often?. Eggs or liveborn young?. Oviparity. Viviparity. Types of viviparity are recognised by the nutrient source for the developing embryo. Activities.

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383 views • 13 slides

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