1
ICAR JRF Entomology 29 Jun 2024Shift 1
MCQ (Single Correct) +4 −1
Which of the following determines the selection of host plant in insects by test biting and ovipositional probing?
  • Phases of Host Plant Selection by Phytophagous Insects:
  • Host-habitat finding: Moving to the general plant community guided by light, wind, and broad environmental cues.
  • Host finding: Orientation toward individual host plants using visual and volatile olfactory cues.
  • Host recognition: Tactile and gustatory assessment of the leaf surface upon landing.
  • Host acceptance: Verified by test biting, sap sampling, and ovipositional probing with chemoreceptors on antennae, tarsi, or ovipositor to confirm chemical compatibility.
  • Host suitability: Nutritional adequacy supporting insect growth and reproduction.
    • Conclusion: Test biting and ovipositional probing determine Host acceptance (Option 3).

Correct option: (3) Host acceptance

Explanation not matching this question? क्या व्याख्या इस प्रश्न से मेल नहीं खा रही? Report
Want to practice this paper in exam conditions? क्या आप परीक्षा जैसे माहौल में अभ्यास करना चाहते हैं? Test yourself in 5-question batch format with timer and hidden answers. 5-प्रश्नों के बैच फॉर्मैट, टाइमर और छिपे उत्तरों के साथ खुद को परखें।
Start Practice Mode → प्रैक्टिस टेस्ट मोड शुरू करें →

Entomology Subjects

Browse all chapters by subject

Official PYQ Papers

Previous Year Papers of Entomology

Practice official shift-wise question papers with answer keys and detailed explanations on the actual exam pattern.

1
Total Available Previous Papers

Choose Exam

Exam Directory

Browse official Previous papers and mock tests

10 Major Agriculture Exams Available