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Photosynthesis

Total questions: 20

Worksheet time: 1hrs 9mins

Name
Class
Date
1.

Organisms that can make their own food energy from the sun are called

a)

autotrophs

b)

heterotrophs

c)

thylakoids

d)

plants

2.

Organisms that cannot make their own food and must obtain energy from external sources are called

a)

autotrophs

b)

heterotrophs

c)

thylakoids

d)

plants

3.

When the ATP molecule loses a_____________ group it will release ______________

a)

phosphate; energy

b)

CO2; energy

c)

phosphate; ADP

d)

energy; ADP

4.
Chlorophyll
a)
is a  pigment
b)
lives in the chloroplasts
c)
all of these
d)
captures energy from the sun
5.

Stomata are made of specialized cells called ______ which surround a tiny pore/opening

a)

stoma

b)

guard cells

c)

dermal cells

d)

diffusion channels

6.

The diffusion of water vapor out of a leaf

a)

transportation

b)

transformation

c)

transpiration

d)

translocation

7.

A stoma is

a)

an opening

b)

a clot

c)

a cell that captures light energy

d)

a water tube

8.
What three things does a plant need to take in to be able to go through photosynthesis?
a)
sunlight, water, and carbon dioxide
b)
sunlight, water, and oxygen
c)
oxygen, carbon, and hydrogen
d)
water, oxygen, and glucose
9.
What is the name of the organelle in the leaves of plants that absorbs the Sun's energy?
a)
roots
b)
chlorophyll
c)
chloroplast
d)
stomata
10.

The ultimate source of energy for the majority of organisms is the

a)

sun

b)

glucose

c)

pizza

d)

fats

11.

The broad flat part of the leaf is called the

a)

petiole

b)

blade

c)

mesophyll

d)

cuticle

12.

Energy is stored in

a)

mitochondria

b)

chloroplast

c)

Chemical bonds

d)

the moon

13.
In the ________________________, energy from the sun is used to make ATP 
a)
light-independent reaction
b)
dark reaction
c)
light-dependent reaction
d)
Calvin cycle
14.

Where does the light reactions happen?

a)

mitochondria

b)

thylakoid

c)

stroma

d)

central vacuole

15.
What is the main purpose of the light dependent reactions?
a)
To provide the energy for the calvin cycle
b)
To capture energy and make sugar
c)
To reflect green light
d)
To make sugars
16.
What are the two products of the light reactions that are needed for the calvin cycle?
a)
NAD and NADPH
b)
NADP + and Glucose
c)
NADPH and ATP
d)
Oxygen and NADPH
17.
What gas does the process of photosynthesis release into the atmosphere?
a)
oxygen
b)
carbon dioxide
c)
water
d)
nitrogen
18.
The gel-like material that surrounds the grana is called ____
a)
lamellae
b)
granum
c)
thylakoid
d)
stroma
19.
The principal chemical compound that living things use to store energy is
a)
DNA
b)
ATP
c)
H2O
d)
CO2
20.
If all four plants were watered daily but placed in a closet, receiving no sunlight, what process would NOT occur?
a)
Ingestion of carbon dioxide
b)
Filtration of water through the soil
c)
Photosynthesis
d)
Water absorbtion

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