The specialized ventral tubular appendage situated on the first abdominal segment of springtails refers to:
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Answer: B. Collophore
Explanation
The collophore is a unique ventral tube found exclusively on springtails belonging to Collembola. This specialized tubular appendage protrudes outward from the first abdominal body segment. It plays a crucial role in water absorption and ionic regulation for soil-dwelling springtails. Springtails use their sticky collophore surfaces to groom themselves and adhere to substrates. Collembola represent a very ancient lineage of wingless hexapods distinct from true insects. The ventral tube connects directly to the hemolymph vascular system for fluid regulation.
Morphological identification of the collophore helps entomologists classify primitive soil microarthropods. Springtails inhabit damp soil and leaf litter where moisture regulation is vital. Agricultural researchers study soil microfauna like springtails to assess soil health conditions. Costa refers to a prominent thickened vein running along the anterior insect wing margin. Embolium is a distinct sclerotized region found on the forewings of true bugs. An ectoparasitoid is an external parasitic insect feeding on a host organism.
- Subject
- Agriculture
- Category
- Agriculture
- Topic
- —
- Difficulty
- medium
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