plant breeding

1.Apomixis refers to

• a. Formation of seeds without fertilization

• b. Vavilov  

• c.Sexual reproduction

• d. Fusion of Gametes

2. Which of the following is NOT a type of apomixis?

•  a. Adventitious embryony                            

• b. Haploid parthenogenesis

• c. Syngamy

• d. Diplospory

3. Diplospory involves the formation of embryo sac from

• a. Unreduced megaspore mother cell

• b. Reduced megaspore

• c.Nucellus

• d. Synergid

4. Best example for adventive embryony

• a. Mango

• b. Citrus

• c. Heirarcium

• d. Maize

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