Rhizobium

Q.

Rhizobium converts atmospheric ______ into soluble nitrates.

1. oxygen

2. nitrogen

3. carbon dioxide

4. phosphorus

Q.

Question 30
Choose the forms in which most plants absorb nitrogen

(i) Proteins
(ii) Nitrates and Nitrites
(iii) Urea
(iv) Atmospheric nitrogen

(a) (i) and (ii)
(b) (ii) and (iii)
(c) (iii) and (iv)
(d) (i) and (iv)

Q. Rhizobium is a nitrogen fixing soil bacteria found in the root nodules of pulses and has a ______ relationship with them.

1. parasitic
2. symbiotic
3. saprotrophic
4. autotrophic

Q.

B. Statements given below are incorrect. Write the correct statements :

3. Symbiotic bacteria are present in nodules of cereal plants such as wheat.

Q.

Rhizobium is a nitrogen fixing bacteria found in the roots of pulses and have a ___ relationship with them.