Page 145 - Knowledge Organiser Yr7 24-25

Knowledge Base: Science 7.11 Reproduction Year 7
5. Gestation and Birth
5.5
What is the function of the umbilical cord?
To connect the foetus to the placenta
5.6
What is the purpose of the amniotic fluid?
To act as a shock absorber, protecting the foetus from bumps
5.7
How do substances move into and out of the placenta?
Substances in the blood diffuse in and out the placenta from the mother’s blood (the blood does not mix)
5.8
Name an example of a substance which moves out of the foetus’ blood into the placenta
Carbon dioxide
5.9
What changes occur to the mother during birth?
• The cervix relaxes and dilates (gets wider)
• The muscles in the wall of the uterus contract
5.10
What are the names of the structures in the diagram below?
6. Flower Structure (plant reproduction)
6.1
What is the purpose of a flower?
To allow plants to sexually reproduce through a process called pollination
6.2
What is the name of the female part of a flower?
Carpel
6.3
What is the name of the male part of a flower?
Stamen
6.4
What is the name of the male gamete in plants?
Pollen
6.5
What is the name of the female gamete in plants?
Egg
6.6
What are the main structures found in a flower?
7. Pollination
7.1
What is pollination?
The process of the pollen transferring to the stigma
7.2
What is self-pollination?
When the pollen is transferred to the stigma of the same plant
7.3
What is cross pollination?
When the pollen is transferred to the stigma of a different plant
7.4 Name two methods of pollination Insect and wind
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