The dog’s internal structure and mammal reproduction
Answers are for parents and teachers.
1
Write the dog’s digestive tract in order.
Mouth, pharynx, gullet, stomach, small, large and rectal intestines.
2
How do the diaphragm and ribs move in breathing?
On inhaling ribs rise and diaphragm lowers; on exhaling the reverse.
3
Compare dog and hen brains: similarities and differences.
Both have 5 parts; the dog’s hemispheres are folded and more complex.
4
Why could a foetus not develop without a placenta?
The exchange of food, oxygen and waste goes through the placenta.
5
Write what milk contains and explain its benefit.
Water, fat, protein, carbohydrate, vitamins, salts – complete food for a young animal’s growth.