In the five-kingdom classification, bacteria are placed in the kingdom: MCQ with Answer and Explanation

Explanation:
DNA contains the pentose sugar 2'-deoxyribose, which lacks an oxygen atom on the 2' carbon compared to ribose in RNA. This structural difference makes DNA more chemically stable and suitable for long-term genetic storage. Nucleotides consist of a nitrogenous base, a pentose sugar, and a phosphate group. Ribose is present in RNA.

Explanation:
Kala-azar, also known as visceral leishmaniasis, is a severe systemic disease caused by the protozoan parasite Leishmania donovani. The disease is transmitted to humans through the bite of an infected female Phlebotomus sandfly (in the Old World) or Lutzomyia sandfly (in the New World). The sandfly injects the infective promastigote stage of the parasite into the skin during a blood meal. Anopheles transmits malaria, Aedes transmits dengue and yellow fever, and Culex transmits filariasis.

Explanation:
Holstein-Friesian (often just called Holstein) is a high-yielding exotic breed of dairy cattle originating from the Netherlands. They are known for their high milk production, although the milk has a lower fat content compared to some indigenous breeds. Sahiwal, Gir, and Red Sindhi are important indigenous (Indian) cattle breeds known for their disease resistance and heat tolerance.