B6 Plant Nutrition Flashcards
These flash cards are on Plant nutrition (photosynthesis & the carbon cycle). You need to be familiar with page 12-13 of 'Ard Facts.
In order to photosynthesise plants absorb energy from __________ using a special chemical contained in the leaves called __________ . During photosynthesis, __________ from the air is combined with water from __________ to make __________ .
Light (or sunlight) Chlorophyll Carbon dioxide Soil (or the ground) Glucose (or sugars/carbohydrates)
Can plants photosynthesise at day, at night or all the time?
Only during the day
Can plants respire at day, at night or all the time?
All the time
In order to germinate, which of these does a broad bean seed require? Fertiliser, soil, sunlight or water?
Water
None of the other things HAVE to be present
In the carbon cycle the process which reduces the amount of carbon dioxide in the atmosphere is…
Photosynthesis
Plants get mineral nutrients like nitrates from the…
Soil
To increase the surface area available for absorbing water and minerals, plants have…
Root hairs
Describe a method for safely removing the green substance from a plant’s leaf.
Boil the leaf in water to soften it.
Boil the leaf in ethanol to remove the green substance.
Heat ethanol using a water bath (not a flame).
As well as water, what else must plants obtain from the soil?
Mineral nutrients, such as nitrates.
Name a mineral nutrient required by plants.
Nitrates
or phosphorus, potassium, magnesium…
Carbon dioxide for photosynthesis enters the plant through…
Pores in the leaves (called stomata)
Complete the word equation for photosynthesis to show the 2 reactants and the 2 products:
__________ + water —> __________ + oxygen
Photosynthesis
Reactants: Carbon dioxide and Water
Products: Glucose and Oxygen
Chlorophyll is used by plants to…
Make glucose (by photosynthesis)
Write down the word equation for photosynthesis.
Carbon Dioxide + Water __> Glucose + Oxygen
Which of these would increase the levels of oxygen in the atmosphere? Burning coal, farming cattle, driving cars or planting forests?
Planting forests
Suggest how plants can modify their leaves to reduce water loss on hot days.
Guard cells can close the stomata (leaf pores) to prevent water vapour escaping.
Explain why the roots of plants are covered in microscopic root hairs.
To increase the surface area available for absorbing water and minerals.
Suggest a reason why plants need carbohydrates like starch and glucose.
Plants need energy so their cells must respire.
Starch is important for growth.
Glucose can be used to attract pollinators.
A solution that could be used to show that leaves produce starch is…
Iodine solution.
It starts yellowy red and goes blue or black when starch is present.
Plants get glucose…
By photosynthesising
Water evaporating from the leaves of plants is called…
Transpiration
From the soil, root hair cells can absorb which of these? Carbon dioxide, glucose, nitrates or protein?
Nitrates
These are essential mineral nutrients required for healthy plant growth.
Does a plant gives out carbon dioxide during the day, at night, or all the time?
All the time, when it is respiring.
