RE 9.3 Methods of Asexual and Sexual reproduction

Question 1

Answer the question - What is sexual reproduction

Answer 1

• Requires 2 parents (male and female (egg and sperm)
  The egg and sperm join (zygote) to form an entirely new organisms

Question 2

Answer the question - Methods of sexual reproduction

Answer 2

• Pollination
• External fertilization
• Internal fertilization

Question 3

Explain the process - How does pollination work

Answer 3

Pollination occurs when pollen is transferred from the anthers to the female organs by wind or by animals. If the female stigma is receptive to a pollen gran, the pollen produces a pollen tude, which grows through the female tissues to the egg, where fertilization takes place by the sperm nucleus.

Question 4

Answer the question - External Fertilization

Answer 4

External fertilization usually requires a medium such as water, which sperms can use to swim towards the egg cell. External fertilization usually occur in fish and amphibians. The female lay the eggs in the water and the male squirts the sperm into the same area.

Question 5

Answer the question - Internal Fertilizatoin

Answer 5

Fertilization occurs within the female. Internal fertilization occurs in mammals, insects, birds, and reptilians.

Question 6

Answer the question - Asexual reproduction

Answer 6

Requires one parents, and the offspring are an exact copy of the parent, a clone.

Question 7

Answer the question - What are the methods of asexual reproduction

Answer 7

• Binary Fission
• Budding
• Fragmentation

Question 8

Explain the process - Binary fission

Answer 8

A single-celled organisms (Amoeba, paramecium, euglena) which use asexual reproductions can do so simply by dividing into equal halves.
- When conditions are good, such as plenty of food, water, and right temperatures etc.
- Binary fission is a very effective way of producing many many offspring.

Question 9

Explain the process - Budding

Answer 9

An offspring grows out of the body of the parent. ex. Cactus budding.

Question 10

Explain the process - Framentation

Answer 10

In this form, the body of the parent breaks into distinct pieces, each of which can produce a offspring. ex. pieces of coral broken off in storms can grow into new colonies, A new starfish can grow from one detached arm

Question 11

Answer the question - Fragmentation; plant cutting

Answer 11

Some plants can grow from cutting them up and replanting them