Homework No 7 (after lesson 20)
1. What are male sex cells called and where are they produced? (1)
2. What are female sex cells called and where are they
produced?
(1)
3. State one difference between a sperm and an egg.
(1)
4. Below are diagrams of the human reproductive organs.
D
E
F
Make a table naming the parts represented by the letters.
(5)
5. Copy and complete the following paragraph:
After sexual intercourse if the nucleus of sperm cell joins with the
nucleus of the egg cell __________takes place. The fertilised egg
travels down the__________and becomes fixed into the wall of the
uterus. This process is called____________.
.
6. During development, how is the embryo protected ?
(2)
7. Name 2 substances the embryo requires that pass from the
mother to embryo across the placenta.
(2)
8. Name 2 harmful substances that can also pass to the embryo
from the mother.
(2)
(total 14)