The Entertaining Reproduction Workshop

The Entertaining Reproduction Workshop

Year 8 Science Western Australian Curriculum

Multiple Choice

Compared with arteries, veins contain valves that ensure blood flows in only one direction.

• True

• False

Multiple Choice

Arteries don't require valves because pressure from the heart is so strong that blood is only able to flow in one direction.

• True

• False

Multiple Choice

Why is lumen size (diameter of blood opening) bigger in veins than arteries?.

• because blood in arteries flows under pressure requiring thicker walls (smaller lumen) -- blood in veins flow smoothly so the wall are thinner and lumen is bigger.

• because blood in arteries flows towards the heart requiring thicker walls (smaller lumen), -- blood in veins flows with pressure so the wall are thinner and lumen is bigger.

​Asexual Reproduction

• ​All living things reproduce, leaving offspring to carry on when they die

• ​

• ​

• ​Asexual reproduction involves a single organism making an exact copy of itself

​Asexual Reproduction

• ​In asexual reproduction, the offspring have exactly the same genetic material as the parent

​

• The simplest form of asexual reproduction is an organism splitting in two (binary fission)

Multiple Choice

Binary Fission is a type of asexual reproduction, ...

• ...where offspring grows as an outgrowth from the body of the parent

• ...where an organism is split into fragments

• ...where a parent cell divides, resulting in two identical cells

​Asexual Reproduction

• ​Some organisms are able to form offspring when they split into fragments (fragmentation)

​

• For example some starfish are able to produce offspring when they lose a limb, which goes on to grow to a full starfish

​Asexual Reproduction

• ​Fragmentation is mostly associated with plants (vegetative reproduction)

• ​

• It involves a part of the plant breaking off which grows to a new, identical plant​

​

​

Multiple Choice

Fragmentation is a type of asexual reproduction...

• ...where offspring grows as an outgrowth from the body of the parent

• ...where a parent organism breaks into fragments, capable of growing into a new clone

• ...where a parent cell divides, resulting in two identical cells

Poll

Poll: Asexual Reproduction is Super Exciting!

• Yeah!

• What?

• No!

Multiple Select

What might be an advantage be of asexual reproduction? (SELECT ALL THAT APPLY)

• It does not need mates

• More time and energy efficient

• Population can increase rapidly

• Less time on dating apps

Multiple Select

What might be a disadvantage be of asexual reproduction? (SELECT ALL THAT APPLY)

• It hinders diversity

• Organisms are not able to adapt

• Species only suited to one habitat

• Disease affect all the individuals in a population

​Sexual Reproduction

• ​Sexual reproduction occurs when the sperm from the male parent fertilizes an egg from the female parent, producing an offspring that is genetically different from both parents.

Multiple Select

What might be an advantage of sexual reproduction? (SELECT ALL THAT APPLY)

• It produces variation in the offspring.

• The species can adapt to new environments

• Disease is less likely to affect the entire population

• Population can increase rapidly

​Sexual Reproduction in Plants

• Reproduction in plants takes place sexually and asexually as well. But the majority of the flowering plants reproduce sexually.

• ​

• ​Offspring is produced by the fusion of gametes (sex cells) from each parent.

• ​

Multiple Choice

What are gametes?

• Body cells or somatic cells

• Sex cells (sperm and egg)

• Cells without a nucleus

• Cells without a cell wall

​Sexual Reproduction in Plants

• In flowering plants, male and female reproductive structures can be found in the same individual plant.

• ​

• Organ of sexual reproduction: the flower.

Multiple Choice

The flower is the organ of sexual reproduction in flowering plants.

• Yea!

• Nay!

​Sexual Reproduction in Plants

• In flowering plants, male and female reproductive structures can be found in the same individual plant.

• ​

• ​Male gametes are found in pollen grains and produced in the anthers of the flower.

• ​h

  Female gametes are found in ovules and produced in the ovary of the flower.

Multiple Choice

Male gametes are found in ....

• the ovules

• pollen grains

Multiple Choice

Male gametes are produced in ....

• the anthers

• the ovary

​Sexual Reproduction in Plants

• In flowering plants, male and female reproductive structures can be found in the same individual plant.

• ​

• ​Male gametes are found in pollen grains and produced in the anthers of the flower.

• ​h

  Female gametes are found in ovules and produced in the ovary of the flower.

Multiple Choice

Female gametes are found in ....

• the ovary

• ovules

Multiple Choice

Female gametes are produced in ....

• the ovary

• ovules

​Fertilisation: fusion of male & female gametes to form a zygote.

• A zygote, also known as a fertilized ovum (or fertilized egg), is the union of a sperm cell and an egg cell

• ​

• ​Fertilization is commonly known as conception. Once the fertilized gamete (ovum) implants itself in the uterine lining, pregnancy begins.

​Your turn:

• Fill in the blanks

• ​ Use the internet to find the correct answers

​Word bank:

​petal, filament, ovary, stamen, anther, stigma, sepal, style, pedicel, pistil