UKSSSC Livestock Extension Officer 2026 – Part A (Compulsory 30 Marks) Overnight Revision Guide

The UKSSSC Livestock Extension Officer (LEO / पशुधन प्रसार अधिकारी) Exam is scheduled for 18th October. In the official syllabus, Part A (भाग A – 30 Marks) is strictly compulsory for ALL candidates, whether appearing from the Biology stream or the Agriculture stream.

To help you secure maximum marks in this compulsory section, we have prepared this concise, bilingual Last-Minute Overnight Revision Guide PDF covering cell biology, biomolecules, angiosperm families, plant physiology, reproduction, and environmental biology.

Key Syllabus Topics Covered in This PDF:

• Cell Biology & Cell Division: Protoplasm (physical basis of life), Cell Theory & Omnis cellula-e-cellula, Singer-Nicolson Fluid Mosaic Model, 70S vs 80S ribosomes, semi-autonomous organelles (mitochondria & chloroplasts), lysosomes (acid hydrolases), Golgi complex glycosylation, nucleolus rRNA synthesis, and Meiosis Prophase-I stages (crossing over in Pachytene, chiasmata in Diplotene).
• Biomolecules of Living Cells: Protein alpha-helix hydrogen bonding ($n$ to $n+4$), non-reducing disaccharide structure of sucrose ($\alpha-1, \beta-2$ linkage), and membrane phospholipids (lecithin).
• Taxonomy & Angiosperm Families: Whittaker’s 5 Kingdom classification, viroids (naked ssRNA) vs prions, lichens as SO2 bioindicators, and diagnostic floral formulas for Brassicaceae (tetradynamous, replum), Fabaceae (vexillary, diadelphous 9+1), Cucurbitaceae (bicollateral bundles), Malvaceae (monadelphous stamen tube), Solanaceae (oblique ovary, persistent calyx), and Poaceae.
• Plant Morphology & Anatomy: Dicot vs monocot root anatomy (diarch-hexarch vs polyarch, pith development, secondary growth), stem anatomy (open vs closed vascular bundles), and inflorescence types (Capitulum, Verticillaster, Cyathium).
• Plant Physiology: Münch turgor pressure flow hypothesis, C4 Kranz anatomy and PEP carboxylase, respiration link reaction (Pyruvate dehydrogenase), and plant growth regulators (Auxins, Gibberellins, Cytokinins, Ethylene, Abscisic acid).
• Angiosperm Reproduction: 7-celled 8-nucleate Polygonum embryo sac, Nawaschin’s double fertilization and triple fusion (2n zygote + 3n PEN), apomixis, and adventive polyembryony in Citrus.
• Pollution & Applied Biology: Biomagnification of persistent lipophilic toxins (DDT), eutrophication and aquatic hypoxia, stratospheric ozone depletion by chlorine free radicals, symbiotic nitrogen fixation and leghemoglobin, Bombyx mori sericulture, and Bacillus thuringiensis (Bt) Cry endotoxins.
• Reference Summary: Cell organelle discoverers and primary diagnostic functions table.

Written & Verified by Prakash Joshi

Expert Faculty

Prakash Joshi is a pharmacy professional and Zoology graduate with an interest in life sciences, biology, and competitive exam preparation. Combining his pharmacy background with his academic knowledge of Zoology, he contributes to the development of educational content, practice questions, and exam-oriented study materials at SoloTutes. His work focuses on simplifying complex concepts, providing accurate and useful learning resources, and helping students prepare effectively for competitive examinations. Through SoloTutes, he aims to make quality educational content accessible to aspirants across India.

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