P5 Reproduction in Animals (Concept Map)
Primary 5 Science — Concept Map
Created by Miss Clarissa Ng · www.clartutors.com
Reproduction in Animals
sexual reproduction — offspring arises from the fusion of a male and female reproductive cell
reproductive cells
Sperm (male cell)produced in the testes
Egg (female cell)produced in the ovaries
fertilisation
sperm fuses with egg → fertilised egg · one egg is fertilised by only one sperm at a time
Many sperm, better oddsmany sperm are released to raise the chance of fertilisation
One egg at a timeusually only one egg is released from either ovary
development
Foetus develops in the womb
⏳ Gestation period ≈ 40 weeks / 9 months
The egg dividesThe fertilised egg divides and grows into an offspring.
Gestation periodThe foetus grows in the womb and is born in about 9 months
heredity
Genetic info from father + motheroffspring has traits from both parents
Traits we inheritskin colour and blood type come from our parents
Inherited traitsHair colour, eye colour, skin colour and blood type
traits
Hereditaryeyelids, tongue rolling, dimples, earlobes, eye colour
Non-hereditaryhair length, fingernails, fingerprints, iris pattern
why we reproduce
New individualsReproduction makes new individual organisms.
Continuity of its kindLiving things reproduce so their own kind continues to exist.
cells
Building blocksCells are the basic building blocks of life.
They store informationcells hold genetic information that decides traits
reproductive systems
Penis ejects spermejects sperm and deposits them in the vagina
Vagina receives spermThe vagina is a muscular tube that receives sperm.
Also the birth canalThe vagina is also the birth canal for the baby.
Womb wall of muscleThe womb is pear-shaped with a thick wall of muscle.
The ovariesFemale reproductive organs that produce the eggs