List of top Plant Biotechnology Questions

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Chromosome number may change under prolonged plant tissue culture regimes.
Reason (R): Endosperm cells are triploid in nature.
In the light of the above statements, choose the most appropriate answer from the options given below:

The process of developing gynogenic plant from egg cell is called:

After colchicine treatment of a plant regenerated through androgenesis, the derived plant is considered as:

Gynogenic plant is not produced through:

Which plant cells could be cultured to develop haploid plants?

Match List - I with List - II.

Choose the correct answer from the options given below:

Which treatment is preferred to develop fertile dihaploid plants generated from pollen culture?

Match List - I with List - II.

Choose the correct answer from the options given below:

Which of the following phytohormone is a derivative of adenine?
A. BAP
B. ABA
C. NAA
D. TDZ
Choose the correct answer from the options given below:

In vitro direct organogenesis using leaf explants involves which of the following processes?
A. Dedifferentiation
B. Embryo formation
C. Callus formation
D. Redifferentiation
Choose the correct answer from the options given below:

Match List - I with List - II.

Choose the correct answer from the options given below:

Why is the apical meristem tissue usually lacking the presence of plant viruses?
A. High metabolic activity in meristematic cells
B. Absence of vascular system in the meristem
C. Low endogenous auxin level
D. High concentration of sugar
Choose the correct answer from the options given below:

Select the correct sequence of steps involved in the isolation of protoplasts from the mesophyll cells of a plant leaf:
A. Culture of protoplast suspension
B. Infiltration of the enzyme into the leaf tissue
C. Incubate leaf pieces in filter-sterilized enzyme solution
D. Release of mesophyll protoplasts in solution
Choose the correct answer from the options given below:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): The process of somatic embryogenesis involves embryo induction, development and maturation stages.
Reason (R): Auxin is not required for embryo initiation whereas embryo maturation requires high auxin concentration.

Plant shoot differentiation is a multi-step process which involves:
A. Differentiation of shoot meristem
B. Acquisition of competence to respond to the induction conditions
C. Establishment of shoots
D. Determination to form a specific organ
Choose the correct answer from the options given below:

Select the correct sequence of events for plant somatic embryogenesis:
A. Production of torpedo stage embryos
B. Initiation of embryogenic callus
C. Formation of globular embryos
D. Production of green cotyledonary stage embryos
Choose the correct answer from the options given below:

Which gene is directly associated with shoot apical meristem formation?

Which of the following combination is effective in the regeneration of plant roots?

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): A single plant cell can be regenerated into a complete plantlet.
Reason (R): Plant cells are totipotent in nature.

The coating of synthetic seeds need not to have the following quality for successful field plantation:

A virus-free plant could be regenerated from a virus-infected plant mainly through:

What is the standard initial cell density for the initiation of a suspension culture?

Plant somatic embryogenesis is a process that forms:

The commonly used phytohormone for callus formation is:

Callus is defined as: