Curriculum
Course:
Alhussan Biology — Stage 9
Login
Curriculum
Alhussan Biology — Stage 9
Chapter 9: Plants and Photosynthesis
0/26
9.1 What do we know about plants?
Text lesson
Preview
Biology 9.1 What do we know about plants? — Quiz
164 questions
Preview
Checkpoint Quiz — Biology 9.1 What do we know about plants?
1 questions
Preview
9.2 Photosynthesis
Text lesson
Preview
Biology 9.2 Photosynthesis — Quiz
164 questions
Preview
Checkpoint Quiz — Biology 9.2 Photosynthesis
10 questions
Preview
9.3 Evidence for photosynthesis: testing for starch
Text lesson
Preview
9.3 Evidence for photosynthesis: testing for starch — Quiz
153 questions
Preview
Checkpoint Quiz — Biology 9.3 Evidence for photosynthesis: testing for starch
2 questions
Preview
9.4 Evidence of photosynthesis: oxygen bubbles and pondweed
Text lesson
Preview
9.4 Evidence of photosynthesis: oxygen bubbles and pondweed — Quiz
154 questions
Preview
Checkpoint Quiz — Biology 9.4 Evidence of photosynthesis: oxygen bubbles and pondweed
6 questions
Preview
9.5 The need for minerals
Text lesson
Preview
9.5 The need for minerals — Quiz
160 questions
Preview
Checkpoint Quiz — Biology 9.5 The need for minerals
10 questions
Preview
9.6 The use of fertilisers
Text lesson
Preview
9.6 The use of fertilisers — Quiz
161 questions
Preview
Checkpoint Quiz — Biology 9.6 The use of fertilisers
3 questions
Preview
9.7 Water and mineral transport in plants
Text lesson
Preview
9.7 Water and mineral transport in plants — Quiz
157 questions
Preview
Checkpoint Quiz — Biology 9.7 Water and mineral transport in plants
23 questions
Preview
9.8 Xylem, phloem and plant pests
Text lesson
Preview
9.8 Xylem, phloem and plant pests — Quiz
158 questions
Preview
Checkpoint Quiz — Biology 9.8 Xylem, phloem and plant pests
11 questions
Preview
9.9 Chapter 9 Review: Plants and Photosynthesis
Text lesson
Preview
9.9 Chapter 9 Review: Plants and Photosynthesis — Quiz
157 questions
Preview
Chapter 10: Excretion in Humans
0/17
10.1 What is excretion?
Text lesson
Preview
Biology 10.1 What is excretion? — Quiz
165 questions
Preview
Checkpoint Quiz — Biology 10.1 What is excretion?
7 questions
Preview
10.2 The human excretory system
Text lesson
Preview
Biology 10.2 The human excretory system — Quiz
154 questions
Preview
Checkpoint Quiz — Biology 10.2 The human excretory system
2 questions
Preview
10.3 Who made the best model?
Text lesson
Preview
Biology 10.3 Who made the best model? — Quiz
153 questions
Preview
Checkpoint Quiz — Biology 10.3 Who made the best model?
5 questions
Preview
10.4 When kidneys go wrong
Text lesson
Preview
Biology 10.4 When kidneys go wrong — Quiz
159 questions
Preview
Checkpoint Quiz — Biology 10.4 When kidneys go wrong
2 questions
Preview
10.5 Kidneys work everywhere!
Text lesson
Preview
Biology 10.5 Kidneys work everywhere! — Quiz
154 questions
Preview
Checkpoint Quiz — Biology 10.5 Kidneys work everywhere!
4 questions
Preview
10.6 Chapter 10 Review: Excretion in Humans
Text lesson
Preview
Biology 10.6 Chapter 10 Review: Excretion in Humans — Quiz
155 questions
Preview
Chapter 11: Human Genetics and Development
0/24
11.1 Reproduction: a characteristic of life
Text lesson
Preview
Biology 11.1 Reproduction: a characteristic of life — Quiz
162 questions
Preview
Checkpoint Quiz — Biology 11.1 Reproduction: a characteristic of life
18 questions
Preview
11.2 Fertilisation: new life begins
Text lesson
Preview
Biology 11.2 Fertilisation: new life begins — Quiz
154 questions
Preview
Checkpoint Quiz — Biology 11.2 Fertilisation: new life begins
12 questions
Preview
11.3 Boy or girl? Sex inheritance in humans
Text lesson
Preview
Biology 11.3 Boy or girl? Sex inheritance in humans — Quiz
156 questions
Preview
Checkpoint Quiz — Biology 11.3 Boy or girl? Sex inheritance in humans
6 questions
Preview
11.4 Variation between individuals
Text lesson
Preview
Biology 11.4 Variation between individuals — Quiz
152 questions
Preview
Checkpoint Quiz — Biology 11.4 Variation between individuals
16 questions
Preview
11.5 The development of a fetus
Text lesson
Preview
Biology 11.5 The development of a fetus — Quiz
159 questions
Preview
Checkpoint Quiz — Biology 11.5 The development of a fetus
2 questions
Preview
11.6 Health of the mother, health of the child
Text lesson
Preview
Biology 11.6 Health of the mother, health of the child — Quiz
152 questions
Preview
Checkpoint Quiz — Biology 11.6 Health of the mother, health of the child
2 questions
Preview
11.7 Understanding science, saving lives
Text lesson
Preview
Biology 11.7 Understanding science, saving lives — Quiz
156 questions
Preview
11.8 Smoking and pregnancy: the evidence
Text lesson
Preview
Biology 11.8 Smoking and pregnancy: the evidence — Quiz
153 questions
Preview
11.9 Chapter 11 Review: Human Genetics and Development
Text lesson
Preview
Biology 11.9 Chapter 11 Review: Human Genetics and Development — Quiz
153 questions
Preview
Chapter 12: The Carbon Cycle and Climate Change
0/15
12.1 The carbon cycle
Text lesson
Preview
Biology 12.1 The carbon cycle — Quiz
158 questions
Preview
Checkpoint Quiz — Biology 12.1 The carbon cycle
1 questions
Preview
12.2 People and the carbon cycle
Text lesson
Preview
Biology 12.2 People and the carbon cycle — Quiz
160 questions
Preview
Checkpoint Quiz — Biology 12.2 People and the carbon cycle
3 questions
Preview
12.3 Historical impacts of climate change
Text lesson
Preview
Biology 12.3 Historical impacts of climate change — Quiz
157 questions
Preview
12.4 Predicting the future
Text lesson
Preview
Biology 12.4 Predicting the future — Quiz
155 questions
Preview
Checkpoint Quiz — Biology 12.4 Predicting the future
1 questions
Preview
12.5 Evaluating evidence for climate change
Text lesson
Preview
Biology 12.5 Evaluating evidence for climate change — Quiz
157 questions
Preview
12.6 Chapter 12 Review: The Carbon Cycle and Climate Change
Text lesson
Preview
Biology 12.6 Chapter 12 Review: The Carbon Cycle and Climate Change — Quiz
157 questions
Preview
Chapter 13: Variation and Natural Selection
0/21
13.1 Variation in animals and plants
Text lesson
Preview
Biology 13.1 Variation in animals and plants — Quiz
167 questions
Preview
Checkpoint Quiz — Biology 13.1 Variation in animals and plants
8 questions
Preview
13.2 Natural selection in action
Text lesson
Preview
Biology 13.2 Natural selection in action — Quiz
154 questions
Preview
Checkpoint Quiz — Biology 13.2 Natural selection in action
16 questions
Preview
13.3 Environmental change and natural selection
Text lesson
Preview
Biology 13.3 Environmental change and natural selection — Quiz
159 questions
Preview
Checkpoint Quiz — Biology 13.3 Environmental change and natural selection
3 questions
Preview
13.4 Extinction!
Text lesson
Preview
Biology 13.4 Extinction! — Quiz
157 questions
Preview
Checkpoint Quiz — Biology 13.4 Extinction!
2 questions
Preview
13.5 Investigating the peppered moth: past and present
Text lesson
Preview
Biology 13.5 Investigating the peppered moth: past and present — Quiz
152 questions
Preview
13.6 What can we do?
Text lesson
Preview
13.6 What can we do? — Quiz
10 questions
Preview
Checkpoint Quiz — Biology 13.6 What can we do?
1 questions
Preview
13.7 Chapter 13 Review: Variation and Natural Selection
Text lesson
Preview
13.7 Chapter 13 Review: Variation and Natural Selection — Quiz
10 questions
Preview
Biology Stage 9 Comprehensive Review
Text lesson
Preview
Biology Stage 9 Comprehensive Review — Quiz
162 questions
Preview
Quiz
Biology 11.8 Smoking and pregnancy: the evidence — Quiz
Submit quiz
Once you submit, you will no longer be able to change your answers. Are you sure you want to submit the quiz?
Cancel
Submit
Questions count:
50
Passing grade:
B+
Start Quiz
1.
Which statement is NOT correct?
Smoking raises the risk of cot death.
The fetus grows more slowly.
Nicotine narrows blood vessels, including those of the placenta.
Nicotine widens placental vessels.
2.
Birth weight fell from 3.5 kg to 2.8 kg. Calculate the percentage decrease.
80%
20%
70%
25%
3.
Which statement is NOT correct?
Large studies followed thousands of pregnant women.
Stillbirth rate is about 5.8 per 1000 for smokers.
Smoking raises the risk of cot death.
A survey of 30 births proves the link.
4.
Mean birth weight against cigarettes smoked per day. Which graph shows these results correctly?
A
B
C
D
5.
True or false? Stillbirth rate is about 5.8 per 1000 for smokers.
True
False
6.
True or false? Smoking raises the risk of cot death.
True
False
7.
Which is the correct definition of “Carbon monoxide”?
Birth before 37 weeks.
Gas in smoke that reduces oxygen reaching the fetus.
A grid showing possible offspring combinations.
Adding a nutrient such as folic acid to flour for everyone.
8.
True or false? More cigarettes give heavier babies.
True
False
9.
Carbon monoxide starves the fetus of ____.
food only
water
light
oxygen
10.
Which term matches this definition? “Number of people in a study.”
Sample size
Carbon monoxide
Umbilical cord
Chromosome
11.
Nicotine narrows blood vessels, including those of the ____.
placenta
bones
hair
eyes
12.
A survey of 30 births is a ____ sample.
small
perfect
national
large
13.
Babies of smokers weigh about ____ g or more less.
200
20
2
2000
14.
True or false? Low birth weight babies are more likely to get infections.
True
False
15.
Birth weight fell from 3.4 kg to 2.9 kg. Calculate the percentage decrease.
85%
17%
50%
15%
16.
True or false? Carbon monoxide binds to haemoglobin.
True
False
17.
Smoking in pregnancy is linked to ____ birth weight.
higher
increased
unchanged
lower
18.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
19.
Smoking in pregnancy fell from 25% to 8%. Calculate the percentage decrease.
68%
17%
212%
32%
20.
Mean birth weight by smoking. Which graph shows these results correctly?
A
B
C
D
21.
Pregnant women who smoke in a country. At what value of "Year" is "Smokers (%)" greatest?
2000
2020
2005
2010
22.
True or false? Large studies followed thousands of pregnant women.
True
False
23.
Mean birth weight of babies by smoking during pregnancy. Which bar chart is correct?
A
B
C
D
24.
A study of 841 228 mothers is ____ evidence.
weak
tiny
strong
useless
25.
Which term matches this definition? “Drug in smoke that narrows placental blood vessels.”
Nicotine
Gene
Meiosis
Male
26.
Stillbirths per 1000 births. What is the total of all the values?
7.5
20.1
14.7
17.4
27.
Mean birth weight against cigarettes smoked per day. Between which two values of "Cigarettes per day" did "Mean birth weight (kg)" change the most?
20 and 25
10 and 15
15 and 20
5 and 10
28.
Birth weight fell from 3.5 kg to 3.0 kg. Calculate the percentage decrease.
86%
50%
14%
17%
29.
Which term matches this definition? “A baby born dead after 24 weeks.”
Meiosis
Fertilisation
Stillbirth
Inheritance
30.
Mean birth weight against cigarettes smoked per day. Which graph shows these results correctly?
A
B
C
D
31.
Smoking in pregnancy fell from 22% to 10%. Calculate the percentage decrease.
12%
55%
120%
45%
32.
Which statement is correct?
Stillbirth rate is about 5.8 per 1000 for smokers.
Smoking lowers the risk of cot death.
More cigarettes give heavier babies.
Carbon monoxide increases oxygen to the fetus.
33.
True or false? Large studies are weaker than small ones.
True
False
34.
True or false? Smoking fathers or smoky workplaces can harm a baby.
True
False
35.
Which is the correct definition of “Large study”?
Release of an egg from an ovary.
Unexplained death of a sleeping baby.
A study of many thousands, giving strong evidence.
The length of pregnancy.
36.
Low birth weight babies are more likely to get ____.
muscles
taller
blue eyes
infections
37.
How does carbon monoxide from smoking harm a fetus?
It adds nutrients
It makes the fetus heavier
It binds to haemoglobin, so less oxygen reaches the fetus
It widens blood vessels
38.
Smoking in pregnancy fell from 22% to 8%. Calculate the percentage decrease.
64%
36%
175%
14%
39.
Smoking in pregnancy fell from 22% to 9%. Calculate the percentage decrease.
13%
144%
41%
59%
40.
Stillbirths are 4 per 1000 for non-smokers and 6.2 for smokers. How many times higher for smokers?
0.65 times
10.20 times
1.55 times
2.20 times
41.
How does nicotine affect the placenta?
It narrows blood vessels, so fewer nutrients reach the fetus
It adds oxygen
It widens blood vessels
It has no effect
42.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
43.
Mean birth weight against cigarettes smoked per day. Calculate the percentage change in "Mean birth weight (kg)" from 0 to 25.
85%
15%
−17%
−15%
44.
The more cigarettes smoked, the ____ the birth weight.
higher
random
lower
same
45.
The graph shows mean birth weight against cigarettes smoked per day. What can you conclude?
Birth weight rises then falls
There is no link
Smoking increases birth weight
The more cigarettes smoked, the lower the birth weight
46.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
47.
Mean birth weight by smoking. Which graph shows these results correctly?
A
B
C
D
48.
Which statement is correct?
Smoking is linked to miscarriage, stillbirth and premature birth.
Low birth weight babies have fewer infections.
A survey of 30 births proves the link.
Large studies are weaker than small ones.
49.
Which statement is NOT correct?
More cigarettes give heavier babies.
Smoking fathers or smoky workplaces can harm a baby.
Babies of smokers are more likely to have breathing difficulties.
Carbon monoxide starves the fetus of oxygen.
50.
Which statement is NOT correct?
Stillbirth rate is about 3.8 per 1000 for non-smokers.
Carbon monoxide starves the fetus of oxygen.
Nicotine narrows blood vessels, including those of the placenta.
Carbon monoxide increases oxygen to the fetus.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Questions count:
50
Passing grade:
B+
Start Quiz
1.
Which statement is NOT correct?
Smoking raises the risk of cot death.
The fetus grows more slowly.
Nicotine narrows blood vessels, including those of the placenta.
Nicotine widens placental vessels.
2.
Birth weight fell from 3.5 kg to 2.8 kg. Calculate the percentage decrease.
80%
20%
70%
25%
3.
Which statement is NOT correct?
Large studies followed thousands of pregnant women.
Stillbirth rate is about 5.8 per 1000 for smokers.
Smoking raises the risk of cot death.
A survey of 30 births proves the link.
4.
Mean birth weight against cigarettes smoked per day. Which graph shows these results correctly?
A
B
C
D
5.
True or false? Stillbirth rate is about 5.8 per 1000 for smokers.
True
False
6.
True or false? Smoking raises the risk of cot death.
True
False
7.
Which is the correct definition of “Carbon monoxide”?
Birth before 37 weeks.
Gas in smoke that reduces oxygen reaching the fetus.
A grid showing possible offspring combinations.
Adding a nutrient such as folic acid to flour for everyone.
8.
True or false? More cigarettes give heavier babies.
True
False
9.
Carbon monoxide starves the fetus of ____.
food only
water
light
oxygen
10.
Which term matches this definition? “Number of people in a study.”
Sample size
Carbon monoxide
Umbilical cord
Chromosome
11.
Nicotine narrows blood vessels, including those of the ____.
placenta
bones
hair
eyes
12.
A survey of 30 births is a ____ sample.
small
perfect
national
large
13.
Babies of smokers weigh about ____ g or more less.
200
20
2
2000
14.
True or false? Low birth weight babies are more likely to get infections.
True
False
15.
Birth weight fell from 3.4 kg to 2.9 kg. Calculate the percentage decrease.
85%
17%
50%
15%
16.
True or false? Carbon monoxide binds to haemoglobin.
True
False
17.
Smoking in pregnancy is linked to ____ birth weight.
higher
increased
unchanged
lower
18.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
19.
Smoking in pregnancy fell from 25% to 8%. Calculate the percentage decrease.
68%
17%
212%
32%
20.
Mean birth weight by smoking. Which graph shows these results correctly?
A
B
C
D
21.
Pregnant women who smoke in a country. At what value of "Year" is "Smokers (%)" greatest?
2000
2020
2005
2010
22.
True or false? Large studies followed thousands of pregnant women.
True
False
23.
Mean birth weight of babies by smoking during pregnancy. Which bar chart is correct?
A
B
C
D
24.
A study of 841 228 mothers is ____ evidence.
weak
tiny
strong
useless
25.
Which term matches this definition? “Drug in smoke that narrows placental blood vessels.”
Nicotine
Gene
Meiosis
Male
26.
Stillbirths per 1000 births. What is the total of all the values?
7.5
20.1
14.7
17.4
27.
Mean birth weight against cigarettes smoked per day. Between which two values of "Cigarettes per day" did "Mean birth weight (kg)" change the most?
20 and 25
10 and 15
15 and 20
5 and 10
28.
Birth weight fell from 3.5 kg to 3.0 kg. Calculate the percentage decrease.
86%
50%
14%
17%
29.
Which term matches this definition? “A baby born dead after 24 weeks.”
Meiosis
Fertilisation
Stillbirth
Inheritance
30.
Mean birth weight against cigarettes smoked per day. Which graph shows these results correctly?
A
B
C
D
31.
Smoking in pregnancy fell from 22% to 10%. Calculate the percentage decrease.
12%
55%
120%
45%
32.
Which statement is correct?
Stillbirth rate is about 5.8 per 1000 for smokers.
Smoking lowers the risk of cot death.
More cigarettes give heavier babies.
Carbon monoxide increases oxygen to the fetus.
33.
True or false? Large studies are weaker than small ones.
True
False
34.
True or false? Smoking fathers or smoky workplaces can harm a baby.
True
False
35.
Which is the correct definition of “Large study”?
Release of an egg from an ovary.
Unexplained death of a sleeping baby.
A study of many thousands, giving strong evidence.
The length of pregnancy.
36.
Low birth weight babies are more likely to get ____.
muscles
taller
blue eyes
infections
37.
How does carbon monoxide from smoking harm a fetus?
It adds nutrients
It makes the fetus heavier
It binds to haemoglobin, so less oxygen reaches the fetus
It widens blood vessels
38.
Smoking in pregnancy fell from 22% to 8%. Calculate the percentage decrease.
64%
36%
175%
14%
39.
Smoking in pregnancy fell from 22% to 9%. Calculate the percentage decrease.
13%
144%
41%
59%
40.
Stillbirths are 4 per 1000 for non-smokers and 6.2 for smokers. How many times higher for smokers?
0.65 times
10.20 times
1.55 times
2.20 times
41.
How does nicotine affect the placenta?
It narrows blood vessels, so fewer nutrients reach the fetus
It adds oxygen
It widens blood vessels
It has no effect
42.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
43.
Mean birth weight against cigarettes smoked per day. Calculate the percentage change in "Mean birth weight (kg)" from 0 to 25.
85%
15%
−17%
−15%
44.
The more cigarettes smoked, the ____ the birth weight.
higher
random
lower
same
45.
The graph shows mean birth weight against cigarettes smoked per day. What can you conclude?
Birth weight rises then falls
There is no link
Smoking increases birth weight
The more cigarettes smoked, the lower the birth weight
46.
Stillbirths per 1000 births. Which graph shows these results correctly?
A
B
C
D
47.
Mean birth weight by smoking. Which graph shows these results correctly?
A
B
C
D
48.
Which statement is correct?
Smoking is linked to miscarriage, stillbirth and premature birth.
Low birth weight babies have fewer infections.
A survey of 30 births proves the link.
Large studies are weaker than small ones.
49.
Which statement is NOT correct?
More cigarettes give heavier babies.
Smoking fathers or smoky workplaces can harm a baby.
Babies of smokers are more likely to have breathing difficulties.
Carbon monoxide starves the fetus of oxygen.
50.
Which statement is NOT correct?
Stillbirth rate is about 3.8 per 1000 for non-smokers.
Carbon monoxide starves the fetus of oxygen.
Nicotine narrows blood vessels, including those of the placenta.
Carbon monoxide increases oxygen to the fetus.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
Part of
Chapter 11: Human Genetics and Development
— see every lesson and quiz in this unit.
Free summaries
|
Privacy Policy
|
Terms
|
About
|
Contact
Sign In
The password must have a minimum of 8 characters of numbers and letters, contain at least 1 capital letter
Remember me
Sign In
Sign Up
Restore password
Send reset link
Password reset link sent
to your email
Close
No account?
Sign Up
Sign In
Lost Password?
Accepted payment methods
VISA
meeza
fawry
Pay
Pal