Question

for ivs, micro - cuttings are planted in ______ to root.

a. loamy soil that contains rooting hormone and fungicide

b. sphagnum peat moss, course river sand, and horticultural perlite

c. an agar medium that has been sterilized and contains fungicide

d. sterilized peat moss and potters soil that contains pesticide

Explanation:

In In Vitro Propagation (IVS, In Vitro Seedling or related in - vitro techniques for plant propagation), micro - cuttings for rooting are typically placed in a sterile, well - aerated, and moisture - retaining medium. Sphagnum peat moss, coarse river sand, and horticultural perlite form a suitable medium for this purpose. Loamy soil (option a) is more of a traditional soil for established plants and not ideal for micro - cuttings in IVS. An agar medium (option c) is more associated with tissue culture in a more sterile, lab - based, and often for very small explants or callus culture, not typical micro - cuttings for rooting in IVS. Sterilized peat moss and potter's soil with pesticide (option d) has potter's soil which is not suitable and pesticide is not the right additive for rooting micro - cuttings. So the correct medium is sphagnum peat moss, coarse river sand, and horticultural perlite.

Answer:

b. sphagnum peat moss, course river sand, and horticultural perlite