Why is plastic covering the rockwool slab white on outside

Reference no: EM133297985

Assignment:

Answer the following questions regarding the hydroponic experimental set up as observed in Exercise 5.2.

(i) Why were slits cut on the sides of the plastic that covers the rockwool slab?

(ii) Why is the plastic covering the rockwool slab white on the outside and black on the inside?

(iii) Why was a hole avoided on the top of the rockwool slabs where each plant is planted?

(iv) The seedlings used in the mineral nutrition demonstration were grown in vermiculite but transplanted into the rockwool using perlite. Explain why this was done?

Reference no: EM133297985

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