plant breeding

1.The term centres of origin was coined by

• a. Harlan de wet     

• b. Vavilov  

• c. Zhukovosky                 

• d. Johanssen

2. The centre of origin for Maize is

•  a. Hindusthan                              

• b. Abyssinian

• c. Mexican

• d. China

3. Johanssen pureline theory was on the basis of studies on

• a. Phaseolus vulgaris

• b. Pisum sativum

• c. Lablab purpureus

• d. Vigna mungo

4. The centre of origin for Coffee and Sesame is

• a. Hindusthan

• b. Abyssinian

• c. Mexican

• d. China

5. In homomorphic system of Self incompatibility, incompatibility due to phenotype of pollen is termed as

• a. Gametopyhtic SI

• b. Sporohytic SI

• c. Distyly

• d. Tristyly

6. Law of homologous series of variation states that character found in one species also occur in other

• a. Unrelated species

• b. related species

• c. related genus

• d. unrelated genus

7. A pureline is the progeny of a single self fertilised

• a. heterozygous line

• b. homozygous plant

• c. heterozygous plant

• d. homozygous line

8. The source of dwarfing gene sd1 in rice is

• a. IR 8

• b. Dee-gee-woo-gen

• c. ADT 27

• d. Peta

9. The main nodal agency for plant introduction in India is

• a. IPGRI

• b. CRRI

• c. NBPGR

• d. DRR

10.The region of domestication for Asian rice is ----------river

• a. Balsas

• b. Yangtze

• c. Niger

• d. Indus