WorksheetsUnit 1 - Reproduction - G8 Science Retake
Total questions: 20
Worksheet time: 10mins
The parts labeled in E and F are...
E: Anther
F: filament
E: filament
F: anther
E: pistil
F: style
E: stigma
F: stamen
Which of the following is true about the function of the petals of the flower?
Petals attract the predators of the flower.
Petals protect the stamen and pistil.
Petals attract the insects that would help pollinate the flower.
Petals produce pollen grains that would fertilize the ovary.
Mitosis (asexual reproduction) results in genetically _________ offspring.
different
identical
all
Sexual reproduction requires _____ parent(s) and asexual reproduction requires ___ parent(s).
1,1
2,2
2,1
1,2
What is mitosis used for in the body?
Creation of sex cells
Movement
Growth and repair
Sexual reproduction
Bacteria (prokaryotic) organisms reproduce by
Budding
Binary fission
Spore formation
Vegetative reproduction
Meiosis results in genetically ____________ offspring.
different
identical
all
A human sex cell (such as an egg cell or sperm cell) has just been made in meiosis. How many chromosomes should it have? (hint: a normal human body cell has 46 chromosomes).
11
23
46
48
In meiosis, _________ occurs which rearranges the genes on the chromosomes.
crossing over
duplication
nondisjunction
chromosome deactivation
The reproductive structure of a plant.
flower
leaf
stem
root
Gametes are
egg and sperm
egg only
sperm only
body cells
How many cell divisions occur in meiosis?
1
2
3
4
What is the best way to prevent the spread of the human immunodeficiency virus (HIV)?
Always keep fit by taking regular exercise.
Do not drink from a cup that has been used by an infected person
Have regular tests for HIV infection
Use condoms during sexual intercourse.
Infection with HIV can result in death from AIDS. The graph shows AIDS-related deaths from1990 to 2015 in a country. What is the best explanation for the trend in the number of AIDS-related deaths after 2005?
More HIV-infected individuals were using natural methods of birth control
More HIV-infected men were using spermicides for birth control.
More HIV-infected mothers were breastfeeding their babies.
There was better education about HIV infection.
Herpes is caused by what type of microorganism?
Virus
Bacteria
Fungus
Rickettsiae
How long is the typical menstrual cycle?
28 minute
28 hours
28 days
28 weeks
The lining of which structure breaks down when a female has a period?
Ovary
Small intestine
Uterus
Stomach
Identify the hormone that maintains the lining of the uterus
Insulin
Amylase
Progesterone
FSH
From what stage of life in a female does the menstrual cycle begin?
(a)
The loss of the uterus lining through the vagina is called
menstruation
period
ovulation
menstruation or period
