11.
The sum total of all the seed attributes that can withstand emergence under favourable condition is called

12.
The mineral consituent of cell wall is

13.
A pair of genes are linked if their recombination frequency in test cross is

14.
The number of double crosses will be equal to

15.
Which of the following is a remarkable feature of photosynthesis?

16.
The analogue of 5-bromouracil is

17.
In mitosis, longest phase is

18.
In India for hybrid seed production inmaizewe use

19.
In the mechanism of opening and closing of stomata, the important factor is

20.
Match the following columns:
Column I (Scientist) Column II (Discovery)
a. Shull 1. DNA model
b. Waldyer 2. First hybrid
c. Fairchild 3. Heterosis
d. Watson and Crick 4. Chromosome