WorksheetsPHOTOSYNTHESIS and RESPIRATION
Total questions: 15
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
The most important chemical reaction on our planet is
a)
sunlight
b)
photosynthesis
c)
respiration
2.
What do all plants need to live?
a)
sunlight
b)
carbon dioxide
c)
sunlight and carbon dioxide
3.
Photosynthesis is the process that plants and other organisms use to convert ______ energy into chemical energy or _______.
a)
water energy into chemical energy or glucose
b)
sunlight energy into chemical energy or sugars
c)
sunlight energy into chemical energy or carbon dioxide
4.
What is the green pigment in plants?
a)
oxygen
b)
chlorophyll
c)
glucose
5.
Why is photosynthesis the most important chemical reastion on our planet?
a)
because animals eat plants
b)
because humans eat plants
c)
because it provides oxygen for all life to breathe
d)
because it provides oxygen for only humans to breathe
6.
What is the name of the simple sugar that is produced in photosynthesis?
a)
Sucrose
b)
Dextrose
c)
Glucose
d)
Lactose
7.
What gas is USED in Respiration?
a)
O2
b)
CO2
c)
H2O
d)
CHO2
8.
The process of converting light energy to chemical energy is called
a)
respiration
b)
mitosis
c)
photosynthesis
d)
active transport
9.
What gas is TAKEN IN during photosynthesis?
a)
argon
b)
nitrogen
c)
oxygen
d)
carbon dioxide
10.
What are cell parts in plants that convert sunlight into sugar?
a)
Chloroplasts
b)
Mitochondria
c)
Nucleus
d)
Ribosomes
11.
As much as __% of the oxygen in our atmosphere is the result of photosynthesis.
a)
50
b)
75
c)
80
d)
90
12.
______ are one of the first links in the food chain.
a)
humans
b)
animals
c)
plants
13.
What happens during photosynthesis?
a)
Plants capture light energy and use it to make glucose.
b)
Plants capture glucose and use it to make light.
c)
Plants capture carbon dioxide and use it to make fermentation.
14.
We ______ make our own food.
a)
cannot
b)
can
15.
What is the equation for the chemical reaction of photosynthesis?
a)
carbon dioxide + water + sun = glucose + oxygen
b)
glucose + oxygen = carbon dioxide + water + sun
100 %
