PHOTOSYNTHESIS

Question 1

Process of manufacturing food in plants mainly sugar from carbon dioxide and water in the presence of chlorophyll utilizing light energy and releasing oxygen gas

Answer 1

Photosynthesis

Question 2

Essential factors in photosynthesis

Answer 2

Raw materials
Energy
Pigments
Temperature
Carrier molecules
Enzymes

Question 3

Two types of raw materials in photosynthesis

Answer 3

Carbon dioxide and water

Question 4

From the atmosphere which diffuses into the intercellular spaces of the leaf through the stoma

Answer 4

Carbon dioxide

Question 5

Absorb from the environment by the cells in vascular plants These absorption is by the roots and water is transported to the leaves through the xylem

Answer 5

Water

Question 6

What is the source of energy

Answer 6

Light energy

Question 7

Most effective wavelength of light energy

Answer 7

Red and blue wavelength

Question 8

Color that mainly reflected from and transmitted through the leaves

Answer 8

Green and yellow

Question 9

The main source of light energy

Answer 9

Sun or solar energy

Question 10

Other source of light energy

Answer 10

Electric light

Question 11

Enables the plant to absorb light energy and to use the absorb energy in the production of sugars

Answer 11

Pigments

Question 12

Example of pigments

Answer 12

Chlorophyll
Xanthophyll
Carotenes

Question 13

Pigment primarily involved in photosynthesis

Answer 13

Chlorophyll

Question 14

Yellow pigments

Answer 14

Xanthophyll

Question 15

Yellow orange pigments

Answer 15

Carotene

Question 16

The range of temperature for photosynthesis is from

Answer 16

5 to 40° C

Question 17

Important in transferring hydrogen atoms electrons and energy

Answer 17

Carrier molecules

Question 18

Speed up the chemical reaction also present in chloroplast

Answer 18

Enzymes

Question 19

The principal end product in the majority of plants

Answer 19

Six carbon sugar or hexose

Question 20

A 3 carbon compound which is the first product formed

Answer 20

Phosphoglyceric acid (PGA)

Question 21

____ molecules of PGA is readily converted to hexose

Answer 21

12

Question 22

Four carbon compound which is the first product formed in some plants term the c4 plants as differentiated from the c3 plants

Answer 22

Oxaloacetic acid

Question 23

It refers to a series of complex oxidation reduction reactions whereby leaving cells obtain energy through the breakdown of organic material

Answer 23

Respiration

Question 24

In this process therefore chemical energy of food is transferred to the chemical energy of some compounds usually ATP

Answer 24

Respiration

Question 25

Common method used in respiration

Answer 25

Glycolysis Krebs cycle or Citric Acid Cycle Terminal oxidation

Question 26

Anaerobic conversion of glucose to two pyruvic acid molecules

Answer 26

Glycolysis

Question 27

Breaks down pyruvic acid to carbon dioxide and hydroxide

Answer 27

Krebs cycle or citric acid cycle

Question 28

Process were in the each atoms given of during the Krebs cycle are passed along a series of compounds and energy is transferred to chemical bonds

Answer 28

Terminal oxidation

Question 29

It is the loss of water in vapor form in a living plant The principal transpiring organs are the leaves

Answer 29

Transpiration

Question 30

Factors affecting transpiration rate

Answer 30

Environmental factors Structural factors preventing water loss

Question 31

Environmental factors

Answer 31

Atmospheric humidity Air movements Air temperature Light intensity Soil conditions

Question 32

Structural factors preventing water loss

Answer 32

Cuticle Stomatal barrier Sunken stomata Distribution of stomata Reduction of transpiring surface

Question 33

The dryer the air above the plant the greater is the transpiration

Answer 33

Atmospheric humidity

Question 34

The more rapid the air movement the faster is the rate of transpiration

Answer 34

Air movements

Question 35

The higher the temperature of air surrounding the leaf the faster is the rate of transpiration

Answer 35

Air temperature

Question 36

As light intensity increases the transpiration rate is also increase

Answer 36

Light intensity

Question 37

Influences water absorption by the roots affects transpiration rate

Answer 37

Soil conditions