Jamb Biology Questions - Components of the soil
Question 1:
Nitrifying bacteria keep the soil fertile by
- A converting ammonium salt to nitrate
- B Converting atmospheric nitrogen to plant nitrogen
- C Converting nitrate to nitrogen
- D Converting nitrate to nitrous oxide
- E Converting atmospheric nitrogen to nitrates
Question 2:
Rhizopus (or mucor) obtain its food from dead organic matter extracellularly. It is said to be
- A An autotroph
- B Saprophyte
- C A facultative parasite
- D A commensal
- E An obligate parasite
Question 3:
Nitrifying bacteria keep the soil fertile by
- A Converting nitrate to nitrogen
- B Converting ammonium salt to nitrate
- C Converting atmospheric nitrogen to plant nitrogen
- D Converting nitrate to nitrous oxide
- E Converting atmospheric nitrogen to nitrates
Question 4:
Rhizopus (or mucor)obtain its food from dead organic matter extracellularly. It is said to be
- A A facultative parasite
- B Saprophyte
- C An obligate parasite
- D A commensal
- E An autotroph
Question 5:
if three 30 cm lengths of glass tubes are tightly packed with clay, sand and loamy soils respectively and then stood in a beaker of water for one week, the level of water will be
- A Lowest in the tube with clay
- B The same in all tubes
- C Lowest in the tube with loamy soil
- D Highest in the tube with sandy soil
- E Lowest in the tube with sandy soil