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Plant Nutrition

Across
Transports sucrose and amino acids
Tests for presence of starch
Controlled by blinds and artificial lighting in glasshouses
Is waterproof and reduces water loss by evaporation
Controlled by electric heaters and ventilator flaps in glasshouses
Ion needed to make amino acids
Process by which plants make carbohydrates
Is transparent to let light through
Ion needed to make the pigment for photosynthesis
Pigment that absorbs energy from light
Where the most photosynthesis takes place
Positive test for starch
Controlled by automatic watering systems, sprinkler and humidifiers
Down
Mesophyll layer with air spaces
One of the products of photosynthesis
Cells that control opening and closing of stomata
Burning butane or pumping it increases its concentration in glasshouses
When a factor is in short supply and restricts life processes
Transports water and mineral ions
Small holes in epidermis for diffusion of gases