Pseudo-embryo sacs present in.
Cyperaceae
Poaceae
Podostemonaceae
Solanaceae
Fragrant flowers with well developed nectaries are an adaptation for _______.
Hydrophily
Anemophily
Entomophily
None of these
Entomophilous flowers produce an odour which many be pleasant (e.g., jasmine) or foul(e.g., Aristolochia, Arum Rafflesia). Smell and nectar attract flies and other insects.
Clay and humic acid particles hold tightly.
Nitrate ions
Ammonium ions
Nitrite ions
Molecular nitrogen