1.

The diagram shows the development of root nodule in soyabean.

A. 1-Rhizobium bacteria; 2-Cortex cell; 3-Outer cortex; 4-Infection thread
B.        1-Rhizobium bacteria; 2-Cortex cell; 3-Inner cortex and pericycle cells; 4-Infection thread
C.        1-Rhizobium bacteria; 2-Endodermal cell; 3-Inner endodermis; 4-Infection thread
D.        1-Nitrosomonas bacteria; 2-Cortex cell; 3-Inner cortex and pericyle cells; 4-Infection thread
Answer» C.        1-Rhizobium bacteria; 2-Endodermal cell; 3-Inner endodermis; 4-Infection thread


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