MockTestVault India — CBSE Class 12 Biology Board Diagnostic 01

Official CBSE Class 12 Senior Secondary Examination Standard | 35 Questions • 60 Minutes | mocktestvault.com

MockTestVault CBSE Class 12

Biology Board Diagnostic Simulator
CBSE Class 12 Science Board Suites:
⚛️ Physics Diagnostic 01 35 Qs • 60M 🧪 Chemistry Diagnostic 01 35 Qs • 60M 🧬 Biology Diagnostic 01 35 Qs • 60M
⏱️ 60:00
1 of 35
Ans: 0 Rev: 0 Left: 35
CBSE Class 12 Board Chapter 1: Sexual Reproduction in Flowering Plants Medium
Question 1 of 35
Loading CBSE Class 12 Biology questions...

📘 CBSE Class 12 Biology Theory Examination Blueprint (044)

The CBSE Class 12 Biology Theory examination (Subject Code 044) carries 70 marks and evaluates understanding of reproductive physiology, Mendelian and molecular genetics, human immunology, recombinant DNA technology, and ecological biodiversity across 13 NCERT chapters.

🌸 Reproduction Double fertilization, 7-celled embryo sac, Leydig cells, LH surge ovulation, and copper IUD contraceptive mechanisms.
🧬 Genetics & Evolution Klinefelter's karyotype, lac operon cistrons, Hershey-Chase 32P/35S experiment, and Hardy-Weinberg equilibrium factors.
🩺 Human Health & Microbes Plasmodium haemozoin chills, Monascus statins, retroviral HIV CD4+ depletion, and active vs passive immunization.
🌱 Biotechnology & Ecology EcoRI palindromic sticky ends, Bt cotton Cry toxin activation, logistic growth carrying capacity, and species-area curves.
⚖️ Marking Scheme & Strategy: • Marks per Question: 1 mark per correct answer; zero negative marking in official CBSE multiple choice sections.
• Ploidy Numbers: Memorize ploidy levels (e.g. n for gametes, 2n for zygote, 3n for angiosperm endosperm).
• Diagram Recall: Practice identifying parts from NCERT figures (pBR322 vector, antibody Y-structure, human blastocyst).