Module 1 Flashcards
What is photosynthesis
Photosynthesis is a process by which green plants make their own food
Green plants convert light energy into ?
Chemical energy
What do plants need to photosynthesise
Carbon dioxide. Water
What is the by product for photosynthesis
Oxygen
What is needed to trap light energy for photosynthesis
Chlorophyll
Where is chlorophyll found
In chloroplast in green plant cells
What do plants make in photosynthesis
Sugar (glucose)
How do plants store glucose
As starch
What basic parts of a leaf section consists of
Upper epidermis, lower epidermis, palisade mesophyll layer, spongy mesophyll layer, air spaces, guard cells surrounding stoma pores on the lower surface
What is the function of the upper epidermis
Protects inner layers, transparent to let light through
What is the function of the lower epidermis
Contains stomata to allow gas exchange
What is the function of the palisade mesophyll cells
Main site of photosynthesis
What is the function of the Spongy mesophyll cells
Loosely arranged with air spaces to let CO2 and O2 move into and out of cells
Stomata
Pores which allow gas exchange and water loss
Guard cells
Change their shape to open and close stomata to control gas exchange
What’s may be on the epidermis
A waxy, waterproof covering (cuticle) on the epidermis
Where is the water taken
Thought the roots
What do herbivores eat
Plants
What do carnivores eat
Other animals
What do omnivores eat
Plants and animals
What is a food chain
A food chain is a relationship where on organism feeds on the previous one & in turn provides energy for the next one
What are the arrows in a food chain
The arrow indicates the DIRECTION of the energy flow
What are producers
Producers are green plants who make their own food through photosynthesis
What are consumers
Consumers eat plants or other animals
What is a food web
A food web is a inter connected series of food chains
What do predictors eat
They eat prey
What do food chains/webs start with
Producers
What is the source of energy for producers
The sun
What are producers eaten by
Primary consumers
What are primary consumers eaten by
Secondary consumers
What are secondary consumers eaten by
Tertiary consumers
What is a pyramid of numbers
It’s a diagram showing the number of organisms at each stage of the food chain
What dose a pyramid of energy show u
It shows the energy content of all the organisms at each stage of the food chain
