Life Processes Photosynthesis Flashcards
What is the word equation of photosynthesis ??
Water+ carbon dioxide+ glucose sugars+ oxygen
Give two reasons why photosynthesis is important for all life on Earth
It produces food for animals to eat
It removes carbon dioxide
How does carbon dioxide enter the plant ??
Through the stoma
What is the function of the guard cells ??
It protects the stoma, they control the opening and the closing of the stoma
Most leaves have more stomata on the lower side of the leaf than the upper side! Suggest a reason for this
Because it prevents any excess of water loss
What are 6 labels on a diagram of a plant cell??
Cell membrane Chloroplast Cell wall Nucleus Cytoplasm Vacuole
If a leaf is broad flat and thin. Why is it good for photosynthesis
Being flat is good for maximum absorption of light and thin for efficient gas exchange
What are the 9 labels on a diagram of a leaf??
Upper epidermis Lower epidermis Guard cell Stoma Air space Spongy cell Vein Palisade cell Cuticle
What is the cuticles function ??
To prevent water loss
Which cells have the most chloroplasts
Palisade cells
A leaf is often darker on the upper surface than the lower surface. Why is this good for photosynthesis ??
It has more chloroplasts and this is good because it is exposed to more light
What is the epidermis cells function ??
It protects the leaf form entry of bacteria and fungi
What is the palisade cells function ??
To maximise photosynthesis
What is the spongy cells function ??
Gas exchange
What is the guard cells function ??
It protects the stoma and they control the opening and closing of the stomata
What is the xylem??
The tubes that carry water and minerals
What is transpiration ??
The evaporation of water from the leaf
What are the phloem
Tubes that transport soluble food
What is translocation ??
The transport of food
What can glucose be used for (2 reasons)
Cellulose in walls
Oil in some seeds
What is the function of the root ??
To absorb water and mineral sales and anchorage
What is the function of the stem ??
To support and transport water and food in veins
What is the function of the leaf ??
The large surface area to absorb light and energy for photosynthesis
How would e.g (mineral salts) enter a plant ??
Through the root hair cells ??
