Photosynthesis Flashcards
What 4 things do plants require to make food?
Carbon dioxide( from air), water and mineral salts (from soil), and energy from the sun
Which part of a plant makes its food?
Leaves (they have a large surface area for the capture of sunlight)
What part of a plant absorbs water?
Roots
What is the processes called that plants use to make food?
Photosynthesis
Is all of the food used immediately?
No, some of it is stored.
What part of the leaves absorbs the sun’s energy and makes the food?
Chlorophyll
What color does chlorophyll make a plant’s leaves?
Green
Where do plants store food?
In their leaves, stems, flowers, roots , seeds and fruit
What forms of food may be stored?
Starch, sugar, oil, protein and minerals
During photosynthesis, a plant produces glucose and another product. What is that product?
Oxygen
What form of food is stored in a plant’s leaves?
A sugar called glucose
What other food type may glucose be changed into?
Starch, protein and oil
Give an example of plants/ parts of plants that store glucose.
Sugarcane, apples, bananas
Give an example of plants/ parts of plants that store starch.
Wheat, maize, rice
Give an example of plants/ parts of plants that store oily food.
Nuts, sunflower seeds, olives
Give an example of plants/ parts of plants that store protein.
Soya, peas, beans
Why do the leaves of plants have little food-value ( nutritional-value) to humans?
Plants can’t store much food in their leaves, and the food is not generally of the right type for humans.
Why do humans eat plant leaves today?
They contain vitamins, minerals and water required by human bodies.
Give examples of plants that store food in their stems.
Kohl-rabi, asparagus, potatoes and sugar-cane.
What type of stem is a potato?
A tuber
What type of food does a potato contain?
Starch
Give examples of plants that store food in flowers.
Broccoli, artichoke and cauliflower
Give an example of plants that store their food in roots.
Carrots, beetroot, radish, sweet potatoes
What show that carrots are roots?
The tiny side roots on the thick, orange- colour roots
What is a staple food?
A food which is the main part of someone’s diet
Give examples of seeds which are staple foods.
Wheat, mealies, rice, peas, beans, peanuts and sunflower seeds
What type of food is stored in seeds?
Starch
Name an exception from the rule that starch is stored in seeds.
Unripe peas contain sugar. This turns into starch and protein as the peas ripen.
How can you tell that a part of the plant is a fruit?
It contains seeds, or a single seed
