Madhya Pradesh HSTET Biology Exam – 20 October 2025

1. During protein synthesis, the anticodon of tRNA pairs with:

   • A. Codon on tRNA
   • B. Codon on mRNA
   • C. Ribosomal unit
   • D. Codon on RNA

   Correct Answer: B. Codon on mRNA

2. What is the formula for trisomic monosomic?

   • A. 2n - 1 - 1 - 1
   • B. 2n + 3
   • C. 2n + 1 + 1 + 1
   • D. 2n - 3

   Correct Answer: A. 2n - 1 - 1 - 1

3. Rearrangement of gene groups on chromosomes such that the order remains the same, but the location changes is called:

   • A. Inversion
   • B. Translocation
   • C. Deletion
   • D. Recombination

   Correct Answer: B. Translocation

4. A wild-type nutritional organism that does not require any additional growth supplement is called:

   • A. Phenotype
   • B. Genotype/Prototype
   • C. Autotroph
   • D. Prototroph

   Correct Answer: D. Prototroph

5. Triticum aestivum (common bread wheat) is:

   • A. Triploid with 21 chromosomes
   • B. Hexaploid with 42 chromosomes
   • C. Tetraploid with 30 chromosomes
   • D. Diploid with 14 chromosomes

   Correct Answer: B. Hexaploid with 42 chromosomes