Plants can be made disease resistant by___________________?

Related Mcqs:

1. After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?

   A. Heterogeneous
   B. Heterozygous
   C. Homogenous
   D. Homozygous

2. Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?

   A. 16
   B. 17
   C. 18
   D. None of the above

   Submitted by: Shafiq Rehman

3. The term micro and macro environment was given by___________________?

   A. Robinson (1948)
   B. Lemer (1954)
   C. Perkins (1971)
   D. Comstock and Moll (1963)

4. Concept of combining ability as measure of gene action was first proposed by___________________?

   A. Sprague and Tatum (1942)
   B. Cavalli (1952)
   C. Mather (1956)
   D. Wright (1951)

5. Strands of DNA are bounded by___________________?

   A. Icygen
   B. Carbon
   C. Hybrogen
   D. Nitrogen

6. Heterosis can be fixed by___________________?

   A. Apomixis
   B. Polyploidy
   C. Asexual reproduction
   D. All the above

7. Polytene chromosomes were first observed by___________________?

   A. Mendel (1810)
   B. Balbiani (1881)
   C. Allard (1910)
   D. Baranetzky (1910)

8. Male sterility in flowering plant was first reported by___________________?

   A. Stout (1917)
   B. Koelreuter (1763)
   C. Brewbaker (1810)
   D. Gerstel (1900)

9. Theory of mutation was given by___________________?

   A. Mendel
   B. De Vries
   C. Tschermak
   D. Watson

10. The term poly genes was coined by___________________?

    A. Yates (1947)
    B. Hazel (1943)
    C. Mather (1943)
    D. Griffing (1956)