WorksheetsSexual Reproduction- Science
Total questions: 18
Worksheet time: 9mins
Which describes diploid cells?
cells with unpaired chromosomes
cells with paired homologous chromosomes
Which cells are diploid?
all cells
body cells
gametes
sex cells
The diploid chromosome number in human cells is ____.
92
69
46
23
Chromosomes of body cells occur in matching pairs. These pairs of chromosomes are known as ______________.
homologous chromosomes
analogous chromosomes
heterogeneous chromosomes
tetrad chromosomes
What is the advantage of sexual reproduction?
It requires less energy and time.
It creates offspring that are identical to the parents.
It creates genetic diversity in offspring.
There are no advantages to sexual reproduction.
What is the disadvantage of sexual reproduction?
it creates diverse offspring
it occurs quickly
it takes more time and energy
there are no disadvantages to sexual reproduction
Process that creates reproductive sex cells used in sexual reproduction.
mitosis
meiosis
After meiosis, how many chromosomes does each cell have compared to the original cell?
double
equal
half
impossible to tell
There are multiple answers to this question. What are sex cells?
gametes
sperm
eggs
haploid cells
There are multiple answers to this question. Gametes are haploid. What does that mean?
Their chromosomes occur in homologous pairs.
They contain half the chromosomes of a diploid cell
Their chromosomes do not occur in homologous pairs.
They contain twice the number of chromosomes as a diploid cell.
The diploid chromosome number for giraffes is 30. How many chromosomes are in a giraffe's gamete cells?
60
45
30
15
During meiosis, this process increases genetic variation in the gametes.
crossing over
chromosome duplication
DNA transcription
translocation
The union of two haploid gamete cells during sexual reproduction.
meiosis
reduction division
crossing over
fertilization
What is the result of fertilization?
a haploid gamete cell
a diploid gamete cell
a haploid zygote cell
a diploid zygote cell
In humans, the diploid zygote that results from fertilization has ____ chromosomes.
92
46
23
11.5
Fertilization during sexual reproduction in plants is known as ___________.
agriculture
pollination
vegetative propagation
cross breeding
An oak tree gamete (pollen for example) has 12 chromosomes. After pollination, the zygote will have ____ chromosomes.
6
12
24
36
A zygote grows and develops into a multicellular organism by ______.
mitosis
meiosis
