Chapter 7: Reproduction

Question 1

What is the human egg called?

Answer 1

Ovum

Question 2

What is the human sperm called?

Answer 2

Spermatozoa

Question 3

What’s a haploid?

Answer 3

Half a set of chromosomes

Question 4

What’s a diploid?

Answer 4

Full set of chromosomes

Question 5

What’s a gamete?

Answer 5

Sperm or egg cell

Question 6

Adaptations of a sperm cell?

Answer 6

Acrosome contains enzymes to break down egg
Tail so it can swim
Mitrachondria to release a lot of energy through respiration

Question 7

Adaptations of an egg cell

Answer 7

Jelly coating that hardens when 1 sperm enters
Cytoplasm contains lots of nutrients so zygote can grow
Releases hormones to guide sperm

Question 8

What is asexual reproduction

Answer 8

One parent sex cell that splits in half to make an identical clone

Question 9

What’s sexual reproduction

Answer 9

When 2 parent sex cells fuse together in fertilisation to form a zygote

Question 10

Advantages of AR

Answer 10

Easier&Quicker

Pass on good genes if well adapted

Question 11

Disadvantages of AR

Answer 11

bad genes are passed on
can’t adapt to environment
Increased competition for resources

Question 12

Advantages of SR

Answer 12

Able to Adapt

Question 13

Disadvantages of SR

Answer 13

takes longer and more effort
can’t reproduce if pollinators die
Bad genes passed on

Question 14

What does a blastocyst form from?

Answer 14

A zygote