GPB MCQ Quiz 151 for ICAR JRF/SRF/ARS Exam Preparation

1) When the whole L1, L2 or L3 layers of shoot tip meristem is affected by mutagenic treatment, the chimaera is known as

• A. Periclinal chimaera
• B. Sectorial chimaera
• C. Both
• D. None of the above

Answer: A. Periclinal chimaera

2) World's first mutant variety is

• A. Cotton variety MA-9
• B. Cotton variety MCU7
• C. Cotton variety MCU10
• D. None of the above

Answer: A. Cotton variety MA-9

3) Individuals carrying chromosome number other than the diploid (2x and not 2n) number are called

• A. Heteroploids
• B. Haploids
• C. Euploids
• D. None of the above

Answer: A. Heteroploids

4) When an individual has an extra pair of chromosomes is known as

• A. Tetrasomic
• B. Trisomic
• C. Double monosomic
• D. None of the above

Answer: A. Tetrasomic

5) An Allopolyploid that has two copies of each genome present in it, and behaves essentially as a diploid during meiosis is called

• A. Amphidiploid
• B. Segmental allopolyploid
• C. Autopolyploid
• D. None of the above

Answer: A. Amphidiploid