Question:
Match List I with List II
List I (Parameter):
A. Germplasm conservation
B. Clonal degeneration
C. DMSO
D. Virus elimination
List II (Activity):
I. Virus infection, mutation
II. Cryoprotectant
III. Cryotherapy
IV. In-situ, ex-situ, cryopreservation
Choose the correct answer from the options given below:
Match List I with List II
List I (Parameter):
A. Germplasm conservation
B. Clonal degeneration
C. DMSO
D. Virus elimination
List II (Activity):
I. Virus infection, mutation
II. Cryoprotectant
III. Cryotherapy
IV. In-situ, ex-situ, cryopreservation
Choose the correct answer from the options given below:
List I (Parameter):
A. Germplasm conservation
B. Clonal degeneration
C. DMSO
D. Virus elimination
List II (Activity):
I. Virus infection, mutation
II. Cryoprotectant
III. Cryotherapy
IV. In-situ, ex-situ, cryopreservation
Choose the correct answer from the options given below:
Show Hint
DMSO is the most commonly used penetrative cryoprotectant in plant cryopreservation. Merging this fact with the knowledge that clonal crops degenerate due to systemic viral infections makes it simple to find the correct option.
Updated On: Aug 13, 2026
- A - IV, B - II, C - I, D - III
- A - I, B - IV, C - II, D - III
- A - IV, B - I, C - II, D - III
- A - IV, B - I, C - III, D - II
Show Solution
Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
This matching question is based on germplasm preservation, clonal crop management, and tissue culture applications.
Step 2: Detailed Explanation:
Let us trace the correct matches:
A. Germplasm conservation: Germplasm conservation refers to the preservation of genetic resources of plants.
This is achieved via three main approaches: in-situ (in the natural habitat), ex-situ (in seed genebanks, field genebanks, or tissue culture), and cryopreservation (long-term preservation at ultra-low temperatures).
Therefore, A matches with IV (In-situ, ex-situ, cryopreservation).
B. Clonal degeneration: Clonal varieties are vegetatively propagated.
Over successive vegetative generations, their performance, yield, and vigor decline due to the progressive accumulation of systemic pathogens (primarily viruses) and somatic mutations.
Therefore, B matches with I (Virus infection, mutation).
C. DMSO (Dimethyl sulfoxide): DMSO is a low-molecular-weight chemical compound.
In cryopreservation, it is widely used as a cryoprotectant because it penetrates cell membranes, prevents ice crystal growth, and protects cellular membranes during freezing.
Therefore, C matches with II (Cryoprotectant).
D. Virus elimination: Culturing meristems is the main way to eliminate viruses.
Cryotherapy is a technique where shoot tips are briefly treated with liquid nitrogen. Since viruses are absent or present in very low concentrations in the meristematic dome, freezing selectively kills the older infected cells, leaving the uninfected meristematic cells alive to regenerate into virus-free plants.
Therefore, D matches with III (Cryotherapy).
Step 3: Final Answer:
The matches are: A - IV, B - I, C - II, D - III, which matches Option (C).
This matching question is based on germplasm preservation, clonal crop management, and tissue culture applications.
Step 2: Detailed Explanation:
Let us trace the correct matches:
A. Germplasm conservation: Germplasm conservation refers to the preservation of genetic resources of plants.
This is achieved via three main approaches: in-situ (in the natural habitat), ex-situ (in seed genebanks, field genebanks, or tissue culture), and cryopreservation (long-term preservation at ultra-low temperatures).
Therefore, A matches with IV (In-situ, ex-situ, cryopreservation).
B. Clonal degeneration: Clonal varieties are vegetatively propagated.
Over successive vegetative generations, their performance, yield, and vigor decline due to the progressive accumulation of systemic pathogens (primarily viruses) and somatic mutations.
Therefore, B matches with I (Virus infection, mutation).
C. DMSO (Dimethyl sulfoxide): DMSO is a low-molecular-weight chemical compound.
In cryopreservation, it is widely used as a cryoprotectant because it penetrates cell membranes, prevents ice crystal growth, and protects cellular membranes during freezing.
Therefore, C matches with II (Cryoprotectant).
D. Virus elimination: Culturing meristems is the main way to eliminate viruses.
Cryotherapy is a technique where shoot tips are briefly treated with liquid nitrogen. Since viruses are absent or present in very low concentrations in the meristematic dome, freezing selectively kills the older infected cells, leaving the uninfected meristematic cells alive to regenerate into virus-free plants.
Therefore, D matches with III (Cryotherapy).
Step 3: Final Answer:
The matches are: A - IV, B - I, C - II, D - III, which matches Option (C).
Was this answer helpful?
0
0
Top ICAR AIEEA Plant Sciences Questions
- Both plant and animal cells contain some small organelles called 'peroxisomes', which are dedicated to the metabolism of substances such as
- Chemicals that store energy for the majority of work within cells are called
- The longest phase during the eukaryotic cell cycle is
- The formula: [Sum of (Observed-Expected)$^2$/Expected] is also known as
- Human beings have a large-sized 'proteome'. The principal and more significant reason for this is-
View More Questions
Top ICAR AIEEA Plant Genetic Resources Questions
- Which of the following organization is primarily responsible for the collection, evaluation, and conservation of plant genetic resources in India for research purposes?
- Which of the following is NOT a serious limitation for conserving the plant genetic resources under in-vitro repositories?
- The primary objectives of conservation of the plant genetic resources are-
(A). To conserve genetic diversity for future generations
(B). To promote monoculture farming practices
(C). To eradicate invasive plant species
(D). To ensure food security and sustainable agriculture
(E). To facilitate research and innovation in plant breeding - The objectives of the International Treaty of Plant Genetic Resources for Food and Agriculture include:
(A). To promote the conservation and sustainable use of plant genetic resources for food and agriculture.
(B). To ensure the fair and equitable sharing of benefits derived from the use of plant genetic resources.
(C). To encourage genetic modification of crop plants and monoculture farming practices.
(D). Facilitate access to plant genetic resources for food and agriculture, especially for countries with limited resources and capacities.
(E). Strengthen the capacity of farmers, particularly those in developing countries, to conserve, manage, and sustainably use plant genetic resources. - An example of 'primary introduction' of crop varieties in plant breeding in India is -
View More Questions
Top ICAR AIEEA Questions
- Which of the following statements is false?
- Which of the following is an example of an inventory?
- According to Adam Smith, productivity gains could be brought about through .
- The supply curve for an artificially scarce good is .
- Which of the following would not be considered an opportunity cost of paid employment?
View More Questions