GPB 517 Germplasm characterization and evaluation (1 + 1) ( II Exam)

 

 I.                   MARK THE CORRECT OPTION                                             1.0 X 10 = 10

1	Change in the gene pool of a small population due to chance events is known as
a.	Mutation	b.	Selection
c.	Genetic drift	d.	Gene flow
2	Major limitation of in situ conservation is:
a.	Limited preservation of genetic diversity	b.	Requires sophisticated technology and infrastructure
c.	Potential exposure to environmental threats and human impact	d.	All of the above
3	Which of the following mutation do not affect organisms’ fitness
a.	Deleterious mutation	b.	Advantageous mutation
c.	Neutral mutation	d.	Lethal mutation
4	What are crop descriptors primarily used for
a.	Describing the genetic characteristics of crop species	b.	Mapping the distribution of crop CBD
c.	Assessing soil quality	d.	Determining crop yield
5	The Svalbard Global Seed Vault, known for its germplasm conservation, is located in which country?
a.	Canada	b.	Norway
c.	United States	d.	Switzerland
6	Major activities in germplasm collection and evaluation.
a.	Preserving cells or tissues at ultra-low temperatures	b.	Planting crops in diverse environments
c.	Growing plants in greenhouses	d.	Storing seeds at room temperature
7	Which of the following is a common descriptor category in crop descriptors?
a.	Soil type	b.	Morphological characteristics
c.	Environmental conditions	d.	Watering frequency
8	Which of the following gives rise to genetic diversity?
a.	Mutation	b.	Genetic engineering
c.	Recombination	d.	All of the above
9.	What is germplasm conservation primarily concerned with?
a.	Increasing crop yield	b.	Improving soil fertility
c.	Controlling pests in agriculture	d.	Preserving the genetic diversity of plant species
10.	Crop descriptors are essential for which of the following purposes?
a.	Weather prediction	b.	Crop breeding and genetic conservation
c.	Soil testing	d.	Pest management

 

 

II. STATE TRUE OR FALSE, CORRECT THE STATEMENT IF FALSE    0.5 X 10 = 5

1.      Seeds which show very drastic loss in viability with the decrease in moisture content below 12% to 13% are known as orthodox seeds False) Recalcitrant seeds

2.      PPV&FR (Bioversity’s) acts as international facilitator and coordinator,  ensuring full extent of global knowledge and expertise is  reflected in the crop descriptors. (False)

3.      Presence of adequate passport data, characterization and  evaluation data: is the main reasons for best utilization of germplasm (False)

Lack of adequate passport data, characterization and  evaluation data: is the main reasons for the under-utilization of germplasm

4.      CGIAR (Bioversity) has taken the lead in the documentation of plant  genetic resources. (False)

5.      The genetic material which leads to partial fertility on crossing with primary gene pool is called tertiary gene pool (False) secondary gene pool

6.      Entire variability of a cross species can be conserved in gene sanctuaries (False) cannot

7.      The most commonly used cryopreservation is by using liquid nitrogen at the temperature of (-196°C) (True)

8.      In cryopreservation the cells stay completely in an inactive state for very long periods and thus can be conserved for very long periods (True)

9.      Cryoprotectants are the compounds that can prevent the damage caused to cells by freezing or thawing. (True)

10.  The rate of evolution in micro centres is slower than larger areas false It is very high

 

 III  ANSWER THE FOLLOWING IN 2-3 SENTENCES  (Any 5)       2 X 5 = 10.00

             Mention some of the cryoprotectants utilised in cryopreservation and their properties
   Explain Biosphere reserves
   What is the role of germplasm characterization in plant breeding?   Variance of the core collection is lower in comparison to base collection, justify.
   Why preferred sampling is prioritised over random sampling during development of core collection
      Differentiate between IN-situ and Ex-Situ conservation
      Explain Crop wild relatives and their characteristic features