Summary
Summary REPRODUCTION IN VERTEBRATES
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Summary of chapter 3, Reproduction in vertebrates. Diagrams, structures and functions.
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Reproduction in Vertebrates
Flashcards
21 Flashcards
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Flashcards
21 Flashcards
$1.64
0 sales
Some examples from this set of practice questions
1.
Explain external fertilization
Answer: - Egg is fertilized by sperm outside the body - No contact between organisms is necessary - Water is required to allow sperm to swim and to prevent drying out - Mass amounts of energy required to produce mass amounts of sperm as not all sperm may reach the egg(s)
2.
Give an example of an organism that uses external fertilization
Answer: Frogs, Starfish, Trout
3.
Explain Internal fertilization
Answer: - male deposits sperm inside of the female - allows for terrestrial life (no water required) - less energy used as less sperm needs to be produced - contact is necessary
4.
Give an example of an organism that uses internal fertilization
Answer: Birds, Mammals
5.
What are the three types of reproduction methods?
Answer: Ovipary, Vivipary, Ovovivipary
6.
Explain Ovipary
Answer: - eggs are laid - the eggs are fertilized either internally or externally - the embryo develops outside of the body - Eggs are preyed on by predators - Mostly invertebrates
7.
Explain Vivipary
Answer: - Develops in a uterus, internally - Nutrients are taken from the placenta - Born into the world active - Chances of offspring production are increased - Organisms are well developed when born - Mammals
8.
Explain Ovovivipary
Answer: - Develop in eggs internally - Nutrients are taken from egg yolk - Born active after internal hatching - Increased chances of offspring production - Well developed when born - Reptiles
9.
Name the 4 extra-embryonic membranes
Answer: 1. Chorion 2. Allantois 3. Amnion 4. Yolk Sac
10.
Name the 4 extra-embryonic membranes
Answer: 1. Chorion 2. Allantois 3. Amnion 4. Yolk Sac
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