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Edexcel Biology Paper 2: Plant Structures and their Functions Flashcards | StudBud
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Edexcel Biology Paper 2: Plant Structures and their Functions
Edexcel Biology Paper 2: Plant Structures and their Functions
20 terms
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#edexcel #science #biology #SB6 #PlantStructures revision
Flashcards
20 cards
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Questions
20
Answers
1
Photoperiodism when an organism responds to..
.. having it's photograph taken
.. the number of daylight hours in a day
.. a lack of photosynthesis
.. the intensity of Sunlight
2
What type of reaction is photosynthesis?
combustion
exothermic
explosive
endothermic
3
What is the name of the vessels that carry water from the roots to the leaves?
Xylem
Capillaries
Phloem
Veins
4
Through which process do minerals enter root hair cells?
diffusion
osmosis
they don't
active transport
5
Gibberellins are hormones involved in..
seed germination
phototropism
gravitropism
fertilisation
6
What adaptations do root hair cells have to increase water and mineral uptake?
Thin cell walls
A large surface area
A larger than usual vacuole
Lots of holes
7
Through which process does water enter root hair cells?
osmosis
diffusion
active transport
concentration hopping
8
The flow of water into a root, up the stem and out of the leaves is called..
respiration
perspiration
transpiration
translocation
9
Which of the following is the correct equation for photosynthesis?
carbon dioxide + glucose → water + oxygen
glucose + oxygen → carbon dioxide + water
carbon dioxide + water → glucose + oxygen
carbon dioxide + oxygen → glucose + water
10
A factor that prevents a rate increasing is known as a.. ?
reacting factor
limiting factor
reducing factor
controlling factor
11
Which cells in a leaf have large air spaces between them?
Cuticle
Spongy
Palisade
Epidermis
12
According to the inverse square law, if you double the distance from a light source..
.. light intensity is quartered
.. light intensity is halved
light intensity is not affected
.. light intensity is doubled
13
Gases enter / leave a leaf through .. ?
stomata
guard cells
diffusion cells
chloroplasts
14
The plant hormones responsible for growth towards light are known as..
stimuli
auxins
tropisms
gibberellins
15
Which cells in a leaf have contain the most chloroplasts for photosynthesis?
Palisade
Epidermis
Cuticle
Spongy
16
Which cells make up the outer layers of a leaf?
Cuticle
Epidermis
Spongy
Palisade
17
The transfer of sucrose through the phloem is known as..
photosynthesis
respiration
translocation
transpiration
18
Which of these is not a limiting factor of photosynthesis?
temperature
light intensity
O2 concentration
CO2 concentration
19
Which plant hormone gas can be used to ripen fruit?
ethene
auxin
carbon dioxide
gibberellin
20
Growing towards light is known as..
negative gravitropism
positive gravitropism
positive phototropism
negative phototropism
