17 Microscope Slides.
1(d). Acidophile soil bacteria, solution of heavy metals
2(d). Nitrite bacteria, forming harmful nitrogenous substances
3(d). Root of beech with ectotrophic mycorrhiza, t.s.
4(d). Root of birch with partly endotrophic mycorrhiza, t.s.
5(d). Root of lupin with symbiotic nitrogen fixing bacteria
6(d). Netted venation, portion of rotted deciduous leaf
7(c). Charlock (Sinapis), t.s. of stem. Green manure plant
8(d). Soil bacteria (Bacillus megaterium), smear
9(d). Hyphae of root fungi, t.s.
10(d). Lichen, indicator of clean air
11(c). Mushroom (Xerocomus), mycelium
12(c). Root of willow (Salix), planting protecting against erosion
13(c). Earthworm (Lumbricus) t.s., causing soil improvement
14(d). Springtails (Collembola), w.m.
15(d). Mite from forest soil, w.m.
16(c). Constituents of humus soil
17(c). Constituents of peaty soil.
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