In CBSE Class 12 Biology, diagrams are not decorative; they are formal scientific proofs evaluated on accuracy of relative proportions and labeling precision.
High-Frequency Diagrams
- Mature 7-celled, 8-nucleate female gametophyte (Embryo sac) showing antipodals, polar nuclei, and egg apparatus.
- Schematic structure of a transcription unit showing promoter, structural gene, and terminator.
- Structure of tRNA cloverleaf and hairpin models.
- Bioreactor designs (Simple stirred-tank and Sparged stirred-tank bioreactors).
