How Do Organisms Reproduce?: common misconceptions

If your child says… “Organisms make whatever changes they need.”

Ask together

Would a chance copying change always give an organism something useful?

What’s true

Real DNA changes arise by chance, and some have no noticeable effect.

If your child says… “Any animal can make babies by breaking apart.”

Ask together

Does a person healing a cut produce another person?

What’s true

Some simple animals, such as Planaria, can regrow whole bodies from pieces, but dogs cannot.

If your child says… “Every new plant starts from a seed.”

Ask together

If a potato grows shoots without a seed, what has supplied the new growth?

What’s true

A potato can produce a plant from buds on its stem tissue.

If your child says… “Pollination and fertilisation mean the same thing.”

Ask together

Has pollen reaching the stigma already reached an egg inside the ovary?

What’s true

Pollination delivers pollen to the stigma; fertilisation joins gametes inside an ovule.

If your child says… “Every seed needs light to start growing.”

Ask together

How could seeds begin growing beneath dark soil if all needed light?

What’s true

Light is not essential for every seed to germinate.

If your child says… “The prostate makes sperm.”

Ask together

If sperm arrive before the prostate adds fluid, where were they made?

What’s true

The prostate adds fluid to sperm that the testes have already produced.

If your child says… “A period is just an egg coming out.”

Ask together

If menstruation sheds the lining, is releasing an egg the same event?

What’s true

Menstruation sheds the uterine lining with blood when pregnancy has not developed.

If your child says… “Pills protect against infections too.”

Ask together

Does preventing egg release create a barrier between partners?

What’s true

Condoms reduce infection risks with correct, consistent use, while pills provide no infection protection.