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Biology Grade 8
Test Description: Biology
Instructions: Answer all questions to get your test result.
1) How is BALANCED CHEMICAL different to photosynthesis
A
Photosynthesis needs
B
CO2+H20----------Glucose + Oxygen
C
All
D
None
2) What are the steps to test Carbon Dioxide in a Lab
A
Breath in and out until water becomes merky
B
Al
C
Put rubber tube inside the test tube
D
Pour lime water into Test Tube
3) What is a by-product of photosynthesis
A
Air
B
Oxygen
C
Water
D
None
4) What are the main sections for a scientific report
A
Discussion - Aim
B
None
C
Hypothesis - Question
D
All
5) Need for energy drives the interactions and interdependence in an
A
Ecosystem
B
Area
C
None
D
Environment
6) How does the sun provide energy to the earth
A
Heat Energy
B
All
C
none
D
The form of radiant light (energy)
7) Photosynthesis is the process
A
Whereby green plants use carbon dioxide from the air
B
Water from the soil
C
All
D
And radiant energy from the sun
8) Photosynthesis produces a chemical reaction to produce
A
And oxygen
B
All
C
Glucose (food)
D
None
9) Equation for Sunlight
A
None
B
All
C
Carbon dioxide, water glucose oxygen
D
6CO2+6H20---------(sunlight)C6H12O6+6O2
10) Why can plants photosynthesis
A
A pigment that can capture light energy from the sun
B
They are green
C
The contain chlorophyll
D
The last 2
11) What do plants to glucose
A
That can be stored easily
B
Change glucose that they produce into starch
C
None
D
All
12) What else do plants produce
A
Cellulose fibres
B
Which provides roughage for our digestive system
C
That gives plants strength and support
D
All
13) The food that plants produced
A
All
B
None
C
Are eaten by animals
D
And other animals that eat animals
14) What chemical does the food contain
A
none
B
water energy
C
potential energy
D
saved energy
15) Starch Testing
A
Photosynthesis has occured
B
This test shows that
C
The production of glucose
D
All
16) What do you use to test for Starch
A
Iodine solution
B
None
C
Plain water
D
Salt water
17) Steps for testing Starch
A
Ethanol boils at 78o
B
Heat in boiling ethanol for a few minutes
C
Heat a plant in boiling water for 30 seconds
D
All
18) Balanced chemical equation for photosynthesis
A
None
B
All
C
6CO2 + 6H2O --------------- C6H12O6 + 6O2
D
the aim is to see if leave contains starch
19) What is the result on a leaf after the starch test
A
The colour changes to red
B
The colour changes to blue black
C
The colour changes to black
D
None
20) When the leaf changes colour
A
starch was not found
B
It means that the leaf contained starch
C
None
D
All
*select an answer for all questions
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