Asexual Reproduction Asexual Reproduction Question and AnswerQuestion and Answer

Ms. CyrMs. Cyr

What is Asexual Reproduction?What is Asexual Reproduction?

1.1. Asexual reproduction is the Asexual reproduction is the formation of a new individual formation of a new individual that is genetically identical to that is genetically identical to the parent. (A clone)the parent. (A clone)

2.2. Some advantages of asexual Some advantages of asexual reproduction are: only needing reproduction are: only needing one parent to reproduce), and one parent to reproduce), and numerous offspring can be numerous offspring can be produced with little effort.produced with little effort.

3.3. To be classified as a eukaryote, To be classified as a eukaryote, a cell must have a nucleus.a cell must have a nucleus.

4.4. A prokaryote cell has no A prokaryote cell has no nucleus, and only a single nucleus, and only a single chromosome.chromosome.

Asexual Reproduction in BacteriaAsexual Reproduction in Bacteria

1.1. Binary fission is when Binary fission is when a parent divides so that a parent divides so that both new cells contain both new cells contain a single chromosome.a single chromosome.

2.2. An advantage to An advantage to having such a short having such a short cell cycle is cell cycle is rapid rapid population growthpopulation growth. . (Not always good for (Not always good for us!!)us!!)

Asexual Reproduction in ProtistsAsexual Reproduction in Protists

1.1. Protists are different Protists are different from bacteria because from bacteria because they have a they have a true true nucleusnucleus..

2.2. Mitotic cell division in Mitotic cell division in amoebas results in amoebas results in offspring that are offspring that are genetically identicalgenetically identical..

Asexual Reproduction in FungiAsexual Reproduction in Fungi

1.1. Three types of organisms that are classified as fungi Three types of organisms that are classified as fungi are: moulds, yeast and mushrooms.are: moulds, yeast and mushrooms.

2.2. Hyphae grow over the surface of an organism and Hyphae grow over the surface of an organism and into the bodies of other organisms to obtain food.into the bodies of other organisms to obtain food.

3.3. Three methods of asexual reproduction in fungi are:Three methods of asexual reproduction in fungi are:1.1. Fragmentation: a fragment breaks away and grows into a Fragmentation: a fragment breaks away and grows into a

new individual.new individual.2.2. Budding: a copy of the nucleus is made; the new nucleus Budding: a copy of the nucleus is made; the new nucleus

moves into a tiny bud that forms in the cell wall. The bud moves into a tiny bud that forms in the cell wall. The bud grows and eventually separates.grows and eventually separates.

3.3. Spores: contains all genetic information. Leaves the Spores: contains all genetic information. Leaves the sporangium and can start a new colony.sporangium and can start a new colony.

Asexual Reproduction in Fungi Asexual Reproduction in Fungi ContinuedContinued

4.4. A sporangium A sporangium provides a place for provides a place for spores to develop.spores to develop.

5.5. Spores travel by air Spores travel by air currents.currents.

6.6. Apply your Apply your knowledge: Covering knowledge: Covering food in the fridge helps food in the fridge helps keep spores out so keep spores out so mould will not spread! mould will not spread!

Asexual Reproduction in AnimalsAsexual Reproduction in Animals

1.1. Animals can be divided Animals can be divided into vertebrates (have a into vertebrates (have a backbone: human, dogs, backbone: human, dogs, reptiles) and invertebrates reptiles) and invertebrates (no backbone: sponge, (no backbone: sponge, jellyfish)jellyfish)

2.2. A planarian, if cut into two A planarian, if cut into two pieces, will grow into 2 pieces, will grow into 2 new worms. This happens new worms. This happens because of regeneration.because of regeneration.

3.3. Other animals that can Other animals that can reproduce asexually are reproduce asexually are sponges and hydra.sponges and hydra.

Asexual Reproduction in PlantsAsexual Reproduction in Plants

1.1. The meristem of a plant is The meristem of a plant is where cells that undergo where cells that undergo mitosis rapidly are located.mitosis rapidly are located.

2.2. Meristematic cells repair Meristematic cells repair damaged cells and are the damaged cells and are the site for asexual site for asexual reproduction.reproduction.

3.3. Dandelions are difficult to Dandelions are difficult to get ride of because when get ride of because when you pull them out, there is you pull them out, there is often a piece of root left often a piece of root left behind that can grow into behind that can grow into a new plant.a new plant.

Asexual Reproduction in PlantsAsexual Reproduction in Plants

4.4. Layering is when a Layering is when a branch or limb from branch or limb from the parent plant is the parent plant is buried, and a new buried, and a new plant grows from that plant grows from that spot. (Strawberries)spot. (Strawberries)

5.5. Grafting is when stems Grafting is when stems are grafted (attached) are grafted (attached) to roots of another to roots of another plant, and start to plant, and start to grow. grow.