Advantages and Disadvantages of the Types of Reproduction Investigation

• For each example of reproduction given in the PowerPoint write down 1 advantage and 1 disadvantage of the type of reproduction.

Types of Asexual Reproduction In Animals• Budding: happens when

a part of the parent organism pinches off and forms a new organism.

• The new organism separates from the parent and lives independently.• Jellyfish & hydra

Budding

• Organism develops tiny buds on its body

• Asexual reproduction

• Buds form from the parent cell so the bud is identical to the parent.

• Both unicellular and multicellular

• Examples: hydra, plants, some yeast

VIDEO SpongeBob

Types of Asexual Reproduction In Animals• Fragmentation: parts of

the organism break off and a new organism grows identical to the parent.

• Worms & starfish

Types of Asexual Reproduction In Animals• Regeneration: organism

loses a body part and that part may develop into a new organism or simply reform.

• Sea star

Regeneration:

• Specialized cells grow new tissue when a wound or lost limb occurs

• Examples: Starfish, lizard tails, planarian, cuttings from plants….

Cell Division in Unicellular Organisms

Binary Fission:

• form of asexual reproduction in prokaryotic (lacks nucleus) organisms

• Parent organism splits in half

(Eukaryotic – reproduce by mitosis ex: algae, some yeast, protozoans like paramecium)

Spores:

• Single-celled asexual reproductive unit of non-flowering plants, bacteria, fungi, and algae

• Identical to parent

• Released by parent organism

• Think of them like seeds; they are made to grow a new plant and all they need is the proper environment to thrive.

Spores

• Spore Formation – spores = small specialized cells that contain a nucleus and cytoplasm surrounded by a thick outside wall which protects the spore. Under the right conditions the spore can rise to a new organism. Found in bacteria, molds, yeast, mushrooms, mosses, ferns and some protozoans.

Spawning

• In spawning, females release many eggs into the water; then males release sperm over the eggs

Pollination• Pollination is the transfer of pollen from a male part

of a plant to a female part of a plant, enabling later fertilization and the production of seeds, most often by an animal or by wind.

Phenomenon Connection

Thinking about back to the phenomenon of the lizard regrowing its tail.

• Describe which type of reproduction and give evidence.

• Give 1 advantage and 1 disadvantage of this reproduction.