MCQ
Bacteria protect themselves from viruses by fragmenting viral DNA with:
- AEndonuclease
- BExonuclease
- CLigase
- DGyrase
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Statement $I$ : Bone marrow is the main lymphoid organ where all blood cells including lymphocytes are produced.
Statement $II$ : Both bone marrow and thymus provide micro environments for the development and maturation of T-lymphocytes.
In the light of above statements, choose the most appropriate answer from the options given below :
$a$ - Sacred grooves are part of in situ-conservation
$b$ - Zoological parks are approach for in situ-conservation
$c$ - In this approach ecologically unique and biodiversity rich regions are legally protected.