Reproduction - exam practice
Reproduction
Question 1 of 4
Two cats reproduce by sexual reproduction and have a litter of kittens.
In sexual reproduction the male and female gametes join together.
What is the name for this process?
Which one of these statements about asexual reproduction is incorrect?
Which one of these statements about sexual reproduction is incorrect?
When the kittens grow up they will look similar to their parents but they will not be identical to either parent.
Explain why:
- The kittens will look similar to their parents
- The kittens will not be identical to either of their parents.
Complete the passage about reproduction in humans.
During sexual intercourse the male’s is inserted into the female's vagina.
The male gametes, known as , are released from the male urethra into the vagina and swim to the female gamete, called the , through a tube called the .
Each gamete has the haploid number of chromosomes, which is 23 in humans.
The gametes join in a process called .
The single cell produced is called a , contains the number of chromosomes, and becomes implanted in the wall of the .
This cell divides by into an embryo. Each cell in the embryo contains chromosomes.
The diagram shows the human reproductive system in females.
Name the site of gamete production.
Name the site where fertilisation happens.
Name the site where the embryo is implanted.
In sexual reproduction, a sperm cell fuses with an egg cell to form a new zygote.
The zygote undergoes cell division and develops into an embryo.
What type of cell division produces an embryo from a zygote?
How many cells are there in the embryo after 5 cell divisions (starting with a zygote)?
A woman saved tomato seeds from a tomato she ate.
She planted the seeds in her garden.
The tomato plant she grew produced tomatoes.
The tomatoes from the new plant did not taste like the original tomato the woman ate.
Explain why.
The woman was told that tomato plants can be reproduced so that the tomatoes from the new plants will taste the same as the tomatoes from the parent plants.
Give one method she can use to reproduce tomato plants in this way.
Explain why the method you have suggested will produce tomatoes that taste the same as the tomatoes from the parent plants.