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Meiosis for Grade 8

Total questions: 39

Worksheet time: 1hrs 18mins

Name
Class
Date
1.

A human body (somatic) cell usually has how many chromosomes?

a)

6

b)

22

c)

4

d)

46

2.
Why do we need meiosis?
a)
To double the number of chromosomes going into sex cells
b)
To halve the number of chromosomes going into sex cells
c)
To triple the number of chromosomes going into sex cells
d)
To not change the number of chromosomes going into sex cells
3.
The result of meiosis is:
a)
two diploid cells
b)
two haploid cells
c)
four diploid cells
d)
four haploid cells
4.

The chromosomes that pair up during meiosis, are called __________ chromosomes.

a)

heterozygous

b)

haploid

c)

homologous

d)

diploid

5.
What process, and which type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
6.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
7.
How many daughter cells are produced from meiosis ?
a)
10
b)
6
c)
4
d)
2
8.

At the end of mitosis you have _____ cells.

a)

identical

b)

different

c)

identical twins

d)

variety

9.

The products of meiosis are genetically...

a)

different.

b)

identical.

10.
Human eggs and sperm are _____, and each has ____ chromosomes.
a)
diploid, 23
b)
diploid, 46
c)
haploid, 23
d)
haploid, 46
11.

Identify a purpose of mitosis. Select all that apply.

a)

Produce gametes for reproduction.

b)

Repair damaged or dead cells.

c)

Reduce the chromosome number.

d)

Growth of organisms from birth to adulthood.

12.

Identify a purpose of meiosis. Select all that apply.

a)

Produce gametes for reproduction.

b)

Repair damaged or dead cells.

c)

Reduce the chromosome number.

d)

Growth of organisms from birth to adulthood.

13.

What are homologous chromosomes?

a)

Pairs of chromosomes with different genes on each.

b)

Pairs of chromosomes with the same genes on each.

c)

Pairs of chromosomes with no genes.

d)

Pairs of chromosomes with the wrong genes on each.

14.

What phase of Meiosis is this?

a)

Telophase I

b)

Anaphase I

c)

Anaphase II

d)

Telophase II

15.

What phase is the picture showing?

a)

Metaphase I

b)

Metaphase II

c)

Prophase II

d)

Anaphase I

16.

How many chromosomes are in an egg or sperm cell at the end of Meiosis?

a)

23

b)

46

c)

64

d)

32

17.

In what phase is the DNA of the cell replicated or copied?

a)

Interphase

b)

Prophase I

c)

Telophase I

d)

Metaphase I

18.

Crossing over occurs in what phase of Meiosis?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Interphase

19.

What part of the cell disappears during Prophase and reappears in Telophase?

a)

nuclear membrane

b)

cell membrane

c)

chromosomes

20.

Homologous pairs line up in the middle of the cell in what phase of Meiosis?

a)

Metaphase I

b)

Metaphase II

c)

Mitosis

d)

Prophase II

21.

What phase of Meiosis is the picture showing?

a)

Metaphase I

b)

Telophase I

c)

Anaphase II

d)

Telophase II

22.

What phase is in the picture?

a)

Telophase I

b)

Telophase II

c)

Prophase I

d)

Metaphase II

23.

What phase is shown in the picture?

a)

Prophase I

b)

Prophase II

c)

Telophase II

d)

Anaphase I

24.

What phase is in the picture?

a)

Anaphase I

b)

Anaphase II

c)

Telophase I

d)

Metaphase II

25.

What phase is in the picture?

a)

Metaphase 1

b)

Metaphase 2

c)

Prophase 1

d)

Prophase 2

26.

What phase is in the picture?

a)

Anaphase 1

b)

Anaphase 2

c)

Telophase 2

27.
Asexual reproduction and mitosis occur in...
a)
Body Cells
b)
Sex Cells or Gametes
28.
The purpose of sexual reproduction and meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
29.
Before mitosis or meiosis can begin, DNA must go through Interphase. This is when...
a)
DNA replicates
b)
DNA splits
c)
DNA forms chromosomes
d)
Chromosomes cross over
30.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
31.
What is one of the advantages, of reproducing sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
32.
Identify the process.
a)
Mitosis
b)
Meiosis I
c)
Meiosis II
d)
Interphase
33.
Which of the following cells is a gamete?
a)
egg
b)
bone
c)
heart
d)
muscle
34.
The fertilized egg is termed a/an _____.
a)
gamete
b)
allele
c)
homolog
d)
zygote
35.
In mitosis cells are genetically _______, but in meiosis cells are genetically ______.
a)
diverse, identical
b)
identical, diverse/different
36.

Is the following cell diploid or haploid?

a)

Diploid

b)

Haploid

37.
In sexual reproduction, chromosome reduction is necessary to ___.
a)
ensure that all offspring have the correct diploid number of chromosomes
b)
ensure that all offspring have the correct haploid number of chromosomes
c)
ensure that all daughter cells are identical
38.

What kind of cells are made in MEIOSIS?

a)

Haploid Gametes

b)

Diploid Somatic Cells

c)

Skin Cells

d)

Liver Cells

39.
According to the chromosome theory of inheritance, what are carried from parents to their offspring on chromosomes?
a)
Genes
b)
Spindle Fibers
c)
Centrioles
d)
Cytoplasm

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