Every card in Reproduction and genetics, Year 7: more practice
The whole deck, in order — so you can read it through before your child ever sees it.
- The main male sex hormone, made in the testes, is ____.
testosterone
HintIt begins with "testo-", like the organ that makes it.
WhyTestosterone causes a boy's voice to deepen, his body hair to grow and his testes to start making sperm.
- Name the main female sex hormone, made in the ovaries, that causes breasts to develop and periods to start.
Oestrogen
HintIt begins with "oe-".
WhyOestrogen also helps control the menstrual cycle once periods have begun.
- During puberty there is a short, fast burst of increase in height. What is it called?
A growth spurt
HintThink of a sudden short burst of speed.
WhyGrowth spurts happen at different ages for different people, so friends can differ a lot in height for a while.
- Hormones in puberty can make feelings change quickly, from happy to upset and back again. What is this called?
Mood swings
HintFeelings that rise and fall like a playground ride.
WhyMood swings are a normal emotional change in puberty. Talking to someone you trust can help.
- The sticky top of a flower's female part, where pollen must land
The stigma
HintPollen has to stick here for the next stage to happen.
WhyThe stigma sits at the top of the style. Its sticky surface catches pollen grains.
- In a flower, the stamen and the carpel are the two reproductive parts. Which one is the female part?
The carpel
HintThe stamen has the anther. The female part holds the ovary.
WhyThe carpel is made of the stigma, the style and the ovary. The stamen is made of the anther and its filament.
- Inside the ovary of a flower are small structures that each contain a female gamete and can become a seed after fertilisation. What are they called?
Ovules
HintEach one can become a seed after fertilisation.
WhyAn ovule contains the female gamete. After fertilisation the ovule grows into a seed.
- Why is a life cycle drawn as a circle, not a straight line?
The offspring grow up and reproduce, so the cycle starts again
HintWhat does the new generation do when it grows up?
WhyEach generation produces the next, so the stages repeat over and over.
- In a butterfly's life cycle, which stage comes between the caterpillar and the adult?
The pupa (chrysalis)
HintThe caterpillar stays still inside a case while its body is rebuilt.
WhyThe order is egg, caterpillar (larva), pupa, adult butterfly.
- A young frog lives in water, breathes with gills and has a tail but no legs at first. What is this stage called?
A tadpole
HintIt hatches from frogspawn.
WhyThe order is egg (spawn), tadpole, young frog, adult frog. The tadpole grows legs and lungs as it changes.
1★ KS3-BIOL-REP-0047
2★ KS3-BIOL-REP-0048
3★ KS3-BIOL-REP-0049
4★ KS3-BIOL-REP-0050
5★ KS3-BIOL-REP-0051
6★ KS3-BIOL-REP-0052
7★ KS3-BIOL-REP-0053
8★ KS3-BIOL-REP-0054
9★ KS3-BIOL-REP-0055
10★ KS3-BIOL-REP-0056
Keep what you learn
Here, nothing is saved. In your child’s own sky every card is scheduled — it comes back just before they’d forget it — and the professor who wrote it is one tap away.