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ICAR PG Fisheries Science 29 Jun 2024Shift 1
Arranging Order +4 −1

Arrange the larval developmental stages of pearl oyster in sequence:

(A) Eyespot
(B) Veliger
(C) Pediveliger
(D) Trochophore larva

Choose the correct answer from the options given below:

मोती सीप (Pearl oyster) के लार्वा विकास चरणों को सही क्रम में व्यवस्थित करें:

The developmental sequence of pearl oyster (Pinctada spp.) larvae is:

  • Trochophore larva (ciliated, free-swimming stage emerging ~18–24 h post-fertilization)
  • Veliger (D-stage veliger with transparent shell valves)
  • Eyespot stage (eyed veliger developing pigmented eye-spot indicating metamorphic competence)
  • Pediveliger (develops a functional muscular foot to crawl and search for cultch settlement surfaces before transforming into spat).
अतः सही क्रम (D) Trochophore -> (B) Veliger -> (A) Eyespot -> (C) Pediveliger है।
Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report
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