13
ICAR JRF Entomology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
Acrotrophic ovarioles are present in
  • Ovariole Classification: Insect ovarioles are divided into two main categories: panoistic (lacking nurse cells/trophocytes, as in Orthoptera and Odonata) and meroistic (possessing trophocytes).
  • Meroistic Subtypes:
  • Acrotrophic (Telotrophic): The nurse cells remain clustered exclusively in the apical germarium at the tip of the ovariole, and elongate cytoplasmic strands (nutritive cords) connect them to developing oocytes in the vitellarium. This condition is characteristic of Hemiptera and polyphagan Coleoptera.
  • Polytrophic: Nurse cells accompany each individual oocyte down the vitellarium inside the follicular sheath (typical of Lepidoptera, Diptera, and Hymenoptera).
  • Correct Option: Option 3 (Hemiptera).
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