Question

Co-ordination compounds present in following biological systems :
A. Chlorophyll
B. Haemoglobin
C. Vitamin B12
D. Enzymes
E. Roots
Choose the correct answer from the options given below :

• A. A, B, C and D only
• B. A, B, C only
• C. A, C and E only
• D. E only

Answer 1

Answer: (A)

A, B, C and D only

Answer 2

The correct option is (A) :A, B, C and D only.