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Unit 2 Adv. Bio L1 & L2

Total questions: 60

Worksheet time: 2hrs 12mins

Name
Class
Date
1.

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

a)

stoma

b)

guard cells

c)

dermal cells

d)

diffusion channels

2.

The diffusion of water vapor out of a leaf

a)

transportation

b)

transformation

c)

transpiration

d)

translocation

3.

The main function of stomata is to

a)

capture sunlight

b)

protect leaves from insects

c)

allow gases to move rapidly in/out of leaves

d)

release sugars into the atmosphere

4.

Which of the following can be used to best directly estimate past carbon dioxide levels of Earth's atmosphere?

a)

the number of stomata found in fossils of trees

b)

the current levels of nitrogen in the atmosphere

c)

the current pH of the ocean

d)

the structure of the bark in fossilized trees

5.

The specialized organelles where photosynthesis takes place are known as the:

(a)  

6.

Which of the following is NOT RELEASED by the stomata?

a)

Water Vapor

b)

Carbon Dioxide

c)

Oxygen

7.

Transpiration is the loss of water through stomata.

The rate of transpiration

a)

decreases on very hot days

b)

is less on very hot days

c)

changes only on very hot days

d)

increases on very hot days

8.

What happens to the guard cells when water is not available within a plant?

a)

The guard cells close.

b)

The guard cells open.

c)

The guard cells become double.

d)

The guard cells increase.

9.

What is the relationship between stomata and photosynthesis in plants?

a)

The stomata is dependent on photosynthesis.

b)

The stomata are reactants of photosynthesis.

c)

Photosynthesis is dependent on stomata.

d)

Photosynthesis is independent of stomata.

10.

Leaves of green plants contain openings known as stomates, which are opened and closed by specialized cells allowing for gas exchange between the leaf and the outside environment. Which phrase best represents the net flow of gases involved in photosynthesis into and out of the leaf through these openings on a sunny day?

a)

carbon dioxide moves in; oxygen moves out

b)

carbon dioxide and oxygen move in; ozone moves out

c)

oxygen moves in; nitrogen moves out

d)

water and ozone move in; carbon dioxide moves out

11.

#1 - outermost layer and not made of cells; helps regulate water loss.

a)

Epidermal cells

b)

Palisade cells

c)

Xylem cells

d)

Waxy cuticle

12.

#2 & #5 - outermost layer of cells; provides protection from outside elements.

a)

Epidermal cells

b)

Palisade cells

c)

Phloem cells

d)

Waxy cuticle

13.

#3 - layer of tall, columnar cells that contain many chloroplast for photosynthesis

a)

Epidermal cells

b)

Guard cells

c)

Pallisade mesophyll

d)

Spongy mesophyll

14.

#4 - layer of irregular cells with space in between the cells

a)

Pallisade mesophyll

b)

Phloem

c)

Spongy mesophyll

d)

Xylem

15.

#6 - porous opening in the bottom of the leaf that allows for gaseous exchange

a)

Pallisade mesophyll

b)

Spongy mesophyll

c)

Stomata

d)

Vein

16.

#7 - two cells that surround each porous opening; regulates gaseous exchange by opening and closing the pore.

a)

Epidermal cells

b)

Guard cells

c)

Stomata cells

d)

Xylem cells

17.
plants with large leaves will transpire faster than plants with smaller leaves. Which of the following explains why?
a)
plant with large leaves carry more water
b)
plants with large leaves have more stomata in their lower surface
c)
plants with large leaves have more stomata per unit area
d)
plants with large leaves blow readily in the wind
18.
Under which of the following conditions will the plant stomata shut?
a)
high relative humidity
b)
high proportion of atmospheric carbon dioxide
c)
high light intensity
d)
high levels of hormone alsisic acid
19.
Increase in wind speed results in increased rate of transpiration because
a)
increased wind speed helps to maintain high water vapour gradient across stomatal opening
b)
increased wind speed helps to keep the leaves moving, leading to increased evaporation of water
c)
increased wind speed increase the rate of photosynthesis
d)
increased wind speed increases the rate of stomatal opening
20.
Which one of the following is the best thing a farmer can do to minimise water loss by transpiration?
a)
grow his plants in the dark
b)
grow his plants in a glass house with moderated temperature
c)
expose his plants to moist air
d)
use adequate amount of fertilizer on his farm
21.
Which of the following conditions will favour a most reduced rate of transpiration?
a)
reduced environmental temperature and high light intensity
b)
increased environmental temperature and reduced wind speed
c)
increased relative humidity and reduced wind speed
d)
reduced relative humidity and increased wind speed
22.

What part of the plant cell performs photosynthesis?

a)

The Mitochondrion

b)

The Nucleus

c)

The Chloroplast

d)

The Cell Wall

23.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
24.
What supplies the electron that is lost in PS II?
a)
oxygen
b)
water
c)
glucose
d)
rubisco
25.
What does ATP synthase do?
a)
Create ATP in chemiosmosis.
b)
Break down ATP in chemiosmosis.
c)
Break down NADPH. 
d)
Create NADPH.
26.
What happens to the O2 created in the light phase?
a)
Is transferred to the Calvin Cycle
b)
Donates its electrons to the Chlorophyll molecules
c)
Provides a carbon to form the unstable 6-carbon molecule
d)
Diffuses out through the stoma
27.
The energy required to pump H+ ions into the H ion reservoir comes from the _____________
a)
ATP molecules
b)
Electron Transport Chain
c)
Light 
d)
Thylakoid Membrane
28.
What supplies the electrons that are lost in photosystem I (PSI)?
a)
the electrons from PS II
b)
water
c)
glucose
d)
oxygen
29.
What is the function of NADP+?
a)
It absorbs light
b)
It is an electron carrier
c)
It is a light-reflecting pigment
d)
It acts as long-term energy storage
30.
What is the final product of Photosystem 1 
a)
NADPH
b)
ATP
c)
NADP+
d)
glucose
31.
What is formed during Photosystem 2?
a)
ATP
b)
NADPH
c)
NAD+
d)
glucose
32.
Water is split during
a)
photosystem 1 of the light dependent reaction
b)
photosystem 2 of the light dependent reaction
c)
calvin cycle
d)
cell respiration
33.
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
34.

What part of the water molecule that splits travel through the ETC (electron transport chain) along the thylakoid membrane?

a)

Hydrogen Ions

b)

Free Electrons

c)

Oxygen Molecules

35.

Check all of the following that apply for the creation of ATP.

a)

Energy is used to actively transport hydrogen ions

b)

The hydrogen ions are moved against their concentration gradient from the stroma into the inner thylakoid space

c)

Then move along their concentration gradient back into the stroma through specific channels

d)

The channels contain enzymes that create ATP as the hydrogen atoms flow

e)

The electrons continue down the chain to create ATP

36.

True or False: Electrons are charged in photosystem I.

a)

True

b)

False

37.

What three things react to form NADPH?

a)

Electrons

b)

ATP

c)

Hydrogen Ions

d)

NADP+

e)

Enzymes

38.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

39.

5 carbon sugar that combines with CO2 in the Calvin Cycle

a)

3-PGA

b)

G3P

c)

RuBP

d)

Glucose

40.

Which of the following is true of the Calvin Cycle?

a)

carbon dioxide and energy (ATP and NADPH) are used to make organic compounds

b)

energy is absorbed from sunlight and converted to chemical energy stored in ATP and NADPH

c)

Occurs in the thylakoid

d)

Occurs in the cytoplasm

41.

Increasing carbon dioxide can increase photosynthesis, but only to a maximum rate because

a)

There are not enough RuBP molecules

b)

Oxygen cannot leave fast enough

c)

Large amounts of CO2 cannot fit in the chloroplast

d)

Calvin cycle can only go as fast as the light reactions

42.
In the Calvin Cycle, ________ and ________ from the light dependent reactions convert PGA into G3P
a)
O2, ATP
b)
CO2, H2
c)
ADP, NADPH
d)
NADPH, ATP
43.
After 12 G3P molecules are created, 10 are used to regenerate _________, while the other 2 are used to create __________.
a)
RuBP, C6H12O6
b)
Glucose, CO2
c)
ATP, Glucose
d)
Glucose, RUBP
44.
The CO2 used in the Calvin Cycle originates from ___________.
a)
The light phase
b)
The breakdown of the remaining G3P's
c)
Diffusion through the stoma
d)
Lumen of the Thylakoid
45.
True or False: The Calvin Cycle returns ADP and NADP to the light dependent phase.
a)
True
b)
False
46.
The enzyme responsible for Carbon Fixation in C3 Photosynthesis is
a)
RuBisCo
b)
PEP Carboxylase
c)
Hexokinase
d)
Pyruvate DeHydrogenase
47.
What happens to the remaining G3P molecules in the last step of the dark reactions?
a)
They are used to make glucose.
b)
They are reshuffled to make CO2 by adding ATP.
c)
They exit the cycle.
d)
They are reshuffled to make RuBP by adding ATP. 
48.

What does the Calvin Cycle begins with?

a)

Glucose

b)

The input of CO2

c)

Water

d)

ATP synthase

49.

Calvin Cycle can occur without ATP

a)

True

b)

False

50.

Energy for the Calvin cycle is supplied by which of the following from the light reactions?

a)

Carbon dioxide and water

b)

ATP and water

c)

ATP and NADPH

d)

Carbon dioxide and ATP

51.

Carbon dioxide fixation occurs when CO2 combines with which among the choices below?

a)

ATP

b)

G3P

c)

NADPH

d)

RuBP

52.

What is the function of the ATP and NADPH from the light reactions?

a)

Split water

b)

Cause RuBP carboxylase to fix CO2

c)

Cause electrons to move along their pathways

d)

Convert 3 PGA to G3P

53.
According to this absorption spectrum, what color is not used by the chlorophyll pigments?
a)
green
b)
blue
c)
yellow
d)
red
54.

Sunlight is used during photosynthesis to-

a)

Break down the xylem

b)

Break down the stomata

c)

Break down the water

d)

Capture the water

55.

Choose the statement that best describes light reaction.

a)

It converts CO2 to sugar molecule

b)

It converts light energy to chemical energy of ATP and NADPH

c)

It takes place in the stroma

56.

What is the unit of light?

a)

proton

b)

photon

c)

photosystem

57.
How many carbon atoms are in RuBP?
a)
2
b)
3
c)
4
d)
5
58.
What happens to NADPH and ATP after they are used in the Calvin Cycle?
a)
they recycle back to the light reactions
b)
they are used to make G3P
59.
In the Calvin Cycle, carbon from CO2 is added to one molecule of RuBP to create _________.
a)
RUDP
b)
An Unstable 6 Carbon Molecule
c)
PGA
d)
2 3-carbon molecules
60.

Which enzyme joins CO2 and RuBP?

a)

NADP+ reductase

b)

RUBISCO

c)

ATP synthase

d)

none of the above

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