by Sunday | Sep 20 | NABTEB QUESTIONS
(a) Putrefying bacteria (b) Nitrogen-fixing bacteria (c) Nitrifying bacteria (d) Earthworm (a) The role of putrefying bacteria in maintaining soil fertility. 1. Causes decay: decompose organic remains thereby adding humus/plant nutrients to the soil, making soil to...
by Sunday | Sep 20 | NABTEB QUESTIONS
1. putrefying bacteria, nitrifying bacteria, nitrogen-fixing bacteria, blue-green algae. 2. Earthworm, termites, mushroom, legumes.
by Sunday | Sep 20 | NABTEB QUESTIONS
1. Root 2. Stem 3. leaf 4. bulb 5. corm 6. rhizome/flower
by Sunday | Sep 20 | NABTEB QUESTIONS
1. makes food available for all living things 2. makes oxygen available for aerobic respiration 3. removes excess carbon (iv) oxide 4. fibre for making clothes, ropes, mats, etc.
by Sunday | Sep 20 | NABTEB QUESTIONS
Description of the Experiment: 1. Collect a variegated leaf 2. illuminated for about 4 to 6 hours 3. from a healthy growing acalypha/croton/ice plant/calladium plant 4. map the leaf/draw the leaf and label the different coloured areas. 5. treat/prepare the leaf for...
by Sunday | Sep 20 | NABTEB QUESTIONS
It is the process of manufacturing organic substance, sugar, in green cells, in the presence of sunlight, using carbon (IV) oxide, water and dissolved salts, giving off oxygen; as a by-product.