Explain the events which oceur within a female Anopheles mosquito after it has sucked…

CBSE Biology class 12 question and answer | Explain the events which oceur within a female Anopheles mosquito after it has sucked blood from a malaria patient.

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Explain the events which oceur within a female Anopheles mosquito after it has sucked blood from a malaria patient.

Ans.

  1. Ingestion: Female Anopheles mosquito feeds on blood containing malaria parasites (gametocytes) from a malaria-infected individual during a blood meal.

  2. Digestion: Blood meal passes into the mosquito’s midgut, where digestive enzymes break down the blood components.

  3. Gametocyte Activation: In the midgut, gametocytes mature into male and female gametes (gametogenesis) upon exposure to mosquito digestive enzymes.

  4. Fertilization: Male and female gametes fuse to form zygotes in the midgut, forming ookinetes.

  5. Penetration: Ookinetes penetrate the midgut wall and develop into oocysts.

  6. Sporogony: Within oocysts, sporozoites multiply through asexual reproduction (sporogony).

  7. Release: Mature sporozoites are released from oocysts into the mosquito’s hemolymph.

  8. Migration: Sporozoites migrate to the mosquito’s salivary glands and await transmission to a new host during subsequent blood feeding.