Plant propagation can occur through seeds, cuttings, grafting, or tissue culture. Seeds contain dormant plant embryos that germinate under suitable environmental conditions like water, oxygen, temperature, and light. Cuttings involve rooting stem or branch cuttings, while grafting combines tissues from similar or dissimilar plants. Tissue culture grows plants from collected plant tissues in a sterile nutrient solution. Sexual propagation uses seeds to create genetically variable offspring, while asexual propagation through cuttings, grafting, and tissue culture replicates the exact parent plant. Propagation allows multiplying plant species, protecting endangered plants, and improving plant qualities and yields commercially.