What does ICZN stand for in biological nomenclature?
A. Indian Code of Zoological Nomenclature
B. International Code for Zoological Nomenclature
C. International Commission on Zoological Nomenclature
D. Indian Commission for Zoological Names
Answer: Option C
Solution (By JKSSB Mock Tests)
ICZN stands for the International Commission on Zoological Nomenclature. It is the organization that establishes and maintains the International Code of Zoological Nomenclature, which provides the universal rules for naming animals to ensure stability and universality in scientific names.
Explanation:
Tuberculosis (TB) is a bacterial infection caused by Mycobacterium tuberculosis, typically affecting the lungs. It is spread through airborne droplets. S. pneumoniae causes pneumonia, S. typhi typhoid, P. vivax malaria. TB is treated with a multi-drug regimen including isoniazid and rifampicin.
Explanation:
Schwann cells wrap around axons in the PNS to form myelin sheaths. Oligodendrocytes myelinate axons in the CNS. Astrocytes support neurons, microglia are immune cells.
Explanation:
Geotropism (gravitropism) is directional growth in response to gravity; roots show positive geotropism (downward), shoots negative (upward). Phototropism is light-directed, thigmotropism touch, hydrotropism water.
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