Plant Genetics Questions and Answers

Multiple Choice Questions and Answers on Plant Genetics

Question 1 : The shortest of mitotic phases is the

  1. telophase
  2. interphase
  3. metaphase
  4. anaphase

Answer : 4

Question 2 : During meiosis crossing over takes place at

  1. zygotene stage
  2. diplotene stage
  3. diakinesis stage
  4. pachytene stage

Answer : 4

Question 3 : Which of the following transposable elements are not found in plants?

  1. Ac
  2. Tam3
  3. L1
  4. All are found

Answer : 3

Question 4 : A plasmid used to introduce BT toxin into a plant cell

  1. carries an antibiotic resistance gene that makes the plant resistant to antibiotics
  2. causes the plant to produce opines
  3. is toxic for the plant cell
  4. carries a bacterial gene with a plant promoter

Answer : 4

Question 5 : The homologous chromosomes follow the process of synopsis in the

  1. leptotene
  2. zygotene
  3. pachytene
  4. diplotene

Answer : 2

Question 6 : When F1 plants are crossed with homozygous recessive plants, it is known as

  1. test cross
  2. recessive cross
  3. criss-cross
  4. para-cross

Answer : 1

Question 7 : In case of incomplete dominance, the phenotypic ratio of a monohybrid cross will be

  1. 1:2:1
  2. 3:1:1
  3. 1:3:1
  4. 1:1:2

Answer : 1

Question 8 : In the meiotic cell divison in daughter cells are produced by two successive division in which

  1. first division is equational, second is reductional
  2. first division is reductional and second is equational
  3. both divisions are reductional
  4. both divisions are equational

Answer : 1

Question 9 : What is the approximate size (in kb) of the melon mitochondrial genome?

  1. 600 kilobase
  2. 1200 kilobase
  3. 2400 kilobase
  4. 3000 kilobase

Answer : 3

Question 10 : When an organism has a life cycle with alternation of generations, the haploid generation is the

  1. zygote
  2. gametophyte
  3. gamete
  4. sporophyte

Answer : 2

Question 11 : When do kinetochore microtubules pull chromosomes towards opposite spindle poles?

  1. In anaphase A
  2. In anaphase B
  3. In metaphase
  4. In telophase

Answer : 1