PLANT BREEDING AND GENETICS MCQs

1. Protein content in barely is higher than____________________?

A. maize

B. rice

C. wheat

D. None of these

2. Shull and East (1908) proposed over dominance hypothesis of hetrosis in_________________?

A. Barley

B. wheat

C. Maize

D. None of these

3. ICARDA is located at___________________?

A. Columbia

B. Tamil Nadu

C. Syria

D. None of these

4. The concept of disruptive was given by____________________?

A. Morgan

B. Shull and East

C. Mather

D. None of these

5. Germplasm gene banks for different crop plants in world are about_____________________?

A. 980

B. 1080

C. 1200

D. 1100

6. Global gene pool rice is maintained at_________________?

A. China

B. IRRI Philippines

C. Mexico

D. None of these

7. In the long term storage, germplasm can be stored upto____________________?

A. 200 years

B. 150 years

C. 100 years

D. 1250 years

8. Global gene bank of Potato is located at_____________________?

A. Columbia

B. Florida

C. CIP Peru

D. None of these

9. Conservation of germplasm under natural condion is called_________________?

A. In-situ conservation

B. Gene bank

C. Ex-situ conservation

D. Obsolute cultivars

10. Gene pool consist of____________________?

A. Modern cultivars

B. Advanced breeding materials

C. Land race

D. All of the above

11. Germplasm collected within the country is known as____________________?

A. Active collection

B. Working collection

C. Indigenous collection

D. Exotic collection

12. A place or area where maximum variability of crop plants is observed__________________?

A. Genetic diversity

B. Micro centers

C. Gene sanctuaries

D. Centers of diversity

13. System of mating were given by_________________?

A. Sewell Wright (1921)

B. Mather (1953)

C. Bruce and Keebel (1908)

D. Shall and East (1920)

14. Allogamy leads to___________________?

A. Homozy gosity

B. Heterozy gosity

C. Segregation

D. None of these

15. The term mitosis was coined by________________?

A. Flemming (1882)

B. De Vries and correns (1908)

C. Bruce and Keeble (1908)

D. None of these

16. Artificial vegetative reproduction is done by_________________?

A. Grafting

B. Budding

C. Layering

D. All of the above

17. When pollination and fertilization occur in unopened flower bud it is known as__________________?

A. Hamogamy

B. Cleistogamy

C. Chasmogamy

D. All of the above

18. Allogamy is promoted by____________________?

A. Male sterility

B. Dichiny

C. Herkogamy

D. All of the above

19. Mating between distantly related individuals is known as________________?

A. Inbreeding

B. Out breeding

C. Amphimixis

D. All of the above

20. The term self incompatibility was coined by________________?

A. Koelreuter (1763)

B. Gerstel (1950)

C. East (1940)

D. None of the these