• Nematode Biological Control Agents and Metabolites:
• Statement (I) is correct: Pochonia chlamydosporia (formerly Verticillium chlamydosporium), a prominent fungal parasite of nematode eggs, synthesizes toxic aurovertin-like polyketide metabolites and peptaibols that paralyze and kill nematodes.
• Statement (II) is incorrect: Pasteuria penetrans is a Gram-positive, mycelial bacterium characterized specifically by the production of highly resistant, cup-shaped endospores that adhere to the cuticle of root-knot nematode juveniles.
• Conclusion: Statement (I) is correct but Statement (II) is incorrect (Option 3).

• Seed Treatment Dosage with Purpureocillium lilacinum:
• Egg-Parasitic Bio-Nematicide: Purpureocillium lilacinum (formerly Paecilomyces lilacinus) produces chitinases and proteases that destroy the eggshells and juveniles of root-knot nematodes (Meloidogyne incognita).
• Recommended Application Rate: For commercial wettable powder formulations with a colony-forming unit count of $2 \times 10^8\text{ cfu/g}$, the standardized Indian Council of Agricultural Research (ICAR) recommendation for tomato seed treatment before nursery or polyhouse sowing is $10\text{ g/kg}$ of seed ($1\%\text{ w/w}$).
• Conclusion: Recommended dosage is $10\text{ g/kg}$ seed (Option 2).

Correct option: (2) 10g/ kg seed

• Genome Size of Model Nematode Caenorhabditis elegans:
• Sequencing Milestone: Completed in December 1998, C. elegans was the very first multicellular animal to have its complete genome sequenced.
• Genomic Dimensions: The haploid genome comprises approximately $100\text{ Mb}$ ($100 \times 10^6\text{ base pairs}$) distributed across six chromosomes (five autosomes and one X sex chromosome), containing roughly 20,000 protein-coding genes.
• Conclusion: Total genome size is approximately $100 \times 10^6\text{ bp}$ (Option 3).

Correct option: (3) 100 * 10° bp