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photosynthesys

Total questions: 77

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

Which process is this?

a)

Photosynthesis

b)

Respiration

c)

Digestion

2.

Which process is this?

a)

Photosynthesis

b)

Respiration

c)

Digestion

3.

What things are needed for photosynthesis?

a)

CO2

b)

Water

c)

Sunlight

d)

All of the above

4.

During photosynthesis from where do plants take water?

a)

Stem

b)

Roots

c)

Flower

d)

Leaves

5.

TRUE or FALSE: Animals can make their own food inside themselves.

a)

True

b)

False

6.

Name the pigment needed for photosynthesis

(a)  

7.

Which energy is needed for photosynthesis?

(a)  

8.

Name the gas released during the process of photosynthesis

a)

sulphur dioxide

b)

carbon dioxide

c)

oxygen

d)

none of them

9.

Plants make _____ and oxygen during photosynthesis.

a)

water

b)

glucose

c)

sunlight

10.

Which part of the plant prepares food for it?

a)

Stem

b)

Root

c)

Flower

d)

Leaves

11.

Is sunlight necessary for the process of photosynthesis?

(a)  

12.

Sunlight is a good source of _________

a)

Vitamin A

b)

Vitamin B

c)

Vitamin C

d)

Vitamin D

13.

______________ makes food with the help of sunlight.

a)

insects and human

b)

trees and plants

c)

bees and birds

d)

None of the above

14.

Photo in photosynthesis means (a)  

15.

Plants use __________ to prepare food by the process of photosynthesis. (You can tick multiple option)

a)

sunlight

b)

water

c)

carbon dioxide

d)

Chlorophyll

e)

nutrients

16.

Plants breath in ________ during the process of photosynthesis.

a)

oxygen

b)

nitrogen

c)

hydrogen

d)

carbon dioxide

17.

Tiny opening in the leaves through which plants take in carbon dioxide is known as ___________

a)

pores

b)

stomata

c)

chloroplasts

d)

none of the above

18.

Plants give out __________

a)

oxygen

b)

nitrogen

c)

hydrogen

d)

carbon dioxide

19.

Leaves have tiny pigments known as __________

a)

pores

b)

stomata

c)

chloroplasts

d)

all of the above

20.

Leaves uptake sunlight, water, carbon dioxide and turn them into _________ and _________

a)

sugar and water

b)

sugar and oxygen

c)

sugar and carbon dioxide

d)

sugar and food

21.

_______ is a green pigment found in the _______ which is present in the leaves of a plant.

a)

chloroplast, chlorophyll

b)

photosynthesis, chlorophyll

c)

chlorophyll, chloroplast

d)

oxygen, carbon dioxide

22.

________ are also known as 'Lungs of the world'

a)

Human beings

b)

Insects

c)

Plants

d)

Birds

23.

During which time of the day the given process will not take place?

a)

9 pm

b)

10 am

c)

3 pm

d)

None of these

24.

Which of the following processes leads to the formation of oxygen?

a)

Respiration

b)

transpiration

c)

Photosynthesis

d)

All of these

25.

What is the ultimate source of energy on Earth?

a)

Sun

b)

Moon

c)

Star

d)

Plants

26.

Plants are green in colour and capable of making their own food. Hence they are called ___________________.

a)

Heterotroph

b)

Autotroph

c)

Saprophyte

d)

Parasite

27.

Plants capture light in order to perform photosynthesis. They get this light from _______________.

a)

Sun

b)

Moon

c)

Stars

d)

Earth

28.

Plants make their food in the form of glucose. Glucose is a ________________.

a)

carbohydrate

b)

protein

c)

sugar

d)

fat

29.

Animals produce this gas during respiration but plants on the other hand balance this gas in the atmosphere by the process of photosynthesis. This gas is ________________.

a)

oxygen

b)

carbon dioxide

c)

nitrogen

d)

argon

30.

Which of the following structure in the leaf helps in the exit of gas produced during photosynthesis?

a)

veins

b)

stomata

c)

petiole

d)

lamina

31.

Plants store extra food in the form of _____________.

a)

carbon dioxide

b)

glucose

c)

starch

d)

all of these

32.

Identify the chemical used to detect the presence of starch in leaves.

a)

Benzene

b)

Iodine

c)

Naphthalene

d)

All of these

33.

1. What is the main purpose of photosynthesis?

a)

to create energy

b)

to make food

c)

to make Carbon di oxide

d)

to absorb sunlight

34.

2. What gas goes into the plant during photosynthesis?

a)

Oxygen

b)

Nitrogen

c)

Carbon dioxide

d)

Hydrogen

35.

3. What does a plant release into the air after photosynthesis?

a)

Carbon dioxide

b)

Sugar

c)

Oxygen

d)

Energy

36.

4. Most plant appear green because of _________________ .

a)

oxygen

b)

chlorophyll

c)

carbon dioxide

d)

water

37.

5. What part of the plant absorbs water for photosynthesis?

a)

leaves

b)

roots

c)

petals

d)

stem

38.

6. Where do plants get the energy for photosynthesis to take place?

a)

Nutrients in the soil

b)

The Sun

c)

Pollination

d)

Chlorophyll

39.

7. TRUE or FALSE: Plants make their own food and use the energy from the food that is made.

a)

True

b)

False

40.

8. Which of the following is NOT needed for plants to survive?

a)

Sunlight

b)

Pestisides

c)

Carbon dioxide

d)

Water

41.

9. What are the 3 main ingredients needed for photosynthesis

a)

glucose, oxygen, carbon dioxide

b)

carbon dioxide, water, glucose

c)

water, soil, sunlight

d)

sunlight, water, carbon dioxide

42.

10. Which of the following statement is true regarding photosynthesis

a)

creates oxygen for animals to breath

b)

creates energy for plants to use

c)

creates food for plants to use

d)

all of these are correct

43.

Foods synthesized in the process of Photosynthesis by plants is stored as

a)

Starch

b)

Protein

c)

Vitamins

d)

Fats

44.

Where in a plant cell does photosynthesis take place

a)

Palisade cells

b)

Chlorophyll

c)

Chloroplasts

d)

Vacuole

45.

What is the purpose of photosynthesis?

a)

To release energy

b)

To create glucose

c)

To grow

d)

To get oxygen for respiration

46.

Which of these are limiting factors for photosynthesis? Choose 3 answers.

a)

Light intensity

b)

CO2 concentration

c)

Temperature

d)

Light

e)

CO2 levels

47.

Which of these is the correct equation for photosynthesis?

a)

6O2 + C6H12O6 --> 6CO2 + 6H2O

b)

6O2 + 6CO2 --> C6H12O6 + 6H2O

c)

6CO2 + 12H2O --> C6H12O6 + 6H2O + 6O2

d)

6CO2 + 6H2O --> O2 + C6H12O6

48.

What are the products of photosynthesis?

a)

Oxygen and Energy

b)

Carbon Dioxide and Glucose

c)

Glucose and Oxygen

d)

Oxygen and Water

49.

What protects Stomata and helps it in opening and closing?

a)

Guard Cells

b)

Leaf

c)

Stem

d)

Carbon Dioxide

50.

Identify what is shown in the picture

a)

chlorophyll

b)

stomata

c)

carbon dioxide

d)

veins

51.
The main source of energy for all life comes from ____.
a)
the Earth
b)
the moon
c)
the sun
d)
the food we eat/make
52.

Energy stored in all the fossils fuels is made during the process of

a)

Fossilization

b)

Oxidation

c)

Photosynthesis

d)

De-starching

53.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
reflects green light.
d)
does not absorb violet light.
54.
What molecule absorbs sunlight for photosynthesis?
a)
chloroplast
b)
thylakoid
c)
grana
d)
chlorophyll
55.

Main products of the Calvin Cycle

a)

Oxygen, NADP+, ADP

b)

Glucose, CO2, ADP

c)

ADP, NADP+, Glucose

d)

ATP, NADPH, Oxygen

56.

The Calvin Cycle occurs in the

a)

Thylakoid

b)

Grana

c)

Inner membrane of chloroplast

d)

Stroma

57.
Where do the light reactions happen?
a)
mitochondria membrane
b)
thylakoid membrane
c)
stroma
d)
central vacuole
58.
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
59.

What supplies the electrons during photolysis?

a)

oxygen

b)

water

c)

glucose

d)

rubisco

60.

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

61.

Which of the following is not needed to start the light reaction

a)

H2O

b)

ADP + P

c)

CO2

62.

What is the unit of light?

a)

proton

b)

photon

c)

photosystem

63.

Living things need food to obtain ...

a)

nutrients

b)

waste

c)

oxygen

d)

energy

64.

Plants make their own food through a process called...

(a)  

65.

What are the "ingredients" of raw sap?

a)

Sunlight

b)

Water

c)

C02

d)

Mineral salts

66.

What are the "ingredients" of elaborated sap?

a)

CO2

b)

Water

c)

Mineral salts

d)

Sunlight

67.

Chlorophyll is...

a)

a mineral salt

b)

a green substance

c)

an element in raw sap

d)

a type of leaf

68.

Plants need chlorophyll to trap...

(a)  

69.

Plants absorb water and minerals through their (a)  

70.

Sap travels around the plant through tubes called (a)  

71.

During photosynthesis, plants release __________ into the air

a)

oxygen

b)

CO2

c)

sunlight

d)

sap

72.

Plants _______ make their own food at night

a)

can

b)

can't

73.

Elaborated sap is the plant's (a)  

74.

They are tiny openings in the leaves

a)

Stomata

b)

Chlorophyll

c)

Vessels

d)

Tubes

75.

Plants respiration:

a)

They absorb CO2 and release oxygen

b)

They absorb oxygen and release CO2

76.

Why are plants essential for life?

a)

They absorb C02

b)

They are green

c)

They release oxygen

d)

They serve as food for other living things

77.

Photosynthesis takes place (ocurre) in the (a)