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PBOT PHOTOSYN, FRUIT, SEED, GERMINATION > PHOTOSYNTHESIS > Flashcards

PHOTOSYNTHESIS Flashcards

1
Q

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

A

Photosynthesis

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2
Q

Essential factors in photosynthesis

A

Raw materials
Energy
Pigments
Temperature
Carrier molecules
Enzymes

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3
Q

Two types of raw materials in photosynthesis

A

Carbon dioxide and water

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4
Q

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

A

Carbon dioxide

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5
Q

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

A

Water

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6
Q

What is the source of energy

A

Light energy

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7
Q

Most effective wavelength of light energy

A

Red and blue wavelength

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8
Q

Color that mainly reflected from and transmitted through the leaves

A

Green and yellow

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9
Q

The main source of light energy

A

Sun or solar energy

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10
Q

Other source of light energy

A

Electric light

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11
Q

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

A

Pigments

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12
Q

Example of pigments

A

Chlorophyll
Xanthophyll
Carotenes

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13
Q

Pigment primarily involved in photosynthesis

A

Chlorophyll

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14
Q

Yellow pigments

A

Xanthophyll

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15
Q

Yellow orange pigments

A

Carotene

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16
Q

The range of temperature for photosynthesis is from

A

5 to 40° C

17
Q

Important in transferring hydrogen atoms electrons and energy

A

Carrier molecules

18
Q

Speed up the chemical reaction also present in chloroplast

A

Enzymes

19
Q

The principal end product in the majority of plants

A

Six carbon sugar or hexose

20
Q

A 3 carbon compound which is the first product formed

A

Phosphoglyceric acid (PGA)

21
Q

____ molecules of PGA is readily converted to hexose

A

12

22
Q

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

A

Oxaloacetic acid

23
Q

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

A

Respiration

24
Q

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

A

Respiration

25
Q

Common method used in respiration

A

Glycolysis
Krebs cycle or Citric Acid Cycle
Terminal oxidation

26
Q

Anaerobic conversion of glucose to two pyruvic acid molecules

A

Glycolysis

27
Q

Breaks down pyruvic acid to carbon dioxide and hydroxide

A

Krebs cycle or citric acid cycle

28
Q

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

A

Terminal oxidation

29
Q

It is the loss of water in vapor form in a living plant

The principal transpiring organs are the leaves

A

Transpiration

30
Q

Factors affecting transpiration rate

A

Environmental factors
Structural factors preventing water loss

31
Q

Environmental factors

A

Atmospheric humidity
Air movements
Air temperature
Light intensity
Soil conditions

32
Q

Structural factors preventing water loss

A

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

33
Q

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

A

Atmospheric humidity

34
Q

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

A

Air movements

35
Q

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

A

Air temperature

36
Q

As light intensity increases the transpiration rate is also increase

A

Light intensity

37
Q

Influences water absorption by the roots affects transpiration rate

A

Soil conditions

PBOT PHOTOSYN, FRUIT, SEED, GERMINATION (5 decks)

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