Plant Breeding & Genetics Quiz 2
1 / 50
The reason why mutations which are harmful do not eliminated from gene pool is that___________________?
2 / 50
Under drought conditions, there is an increase in__________________?
3 / 50
Development of embryo from egg cell without fertilization is known as___________________?
4 / 50
If the leaf cells have eight chromosomes it is mostly likely that__________________?
5 / 50
After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________?
6 / 50
Nobel prize for the discovery of operon model was awarded to__________________?
7 / 50
A heterogeneous population include_______________?
8 / 50
When a cell with 40 chromosomes undergoes meiosis each of the four resulting cells has_____________________?
9 / 50
In allogamous species, a true breeding line obtained by continuous inbreeding is__________________?
10 / 50
Prescribed germination percentage of foundation seed of groundnut____________________?
11 / 50
In potato food is stored in__________________?
12 / 50
The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of_________________?
13 / 50
Germplasm gene banks for different crop plants in world are about_____________________?
14 / 50
The geometrical device that helps in visnalizing all the possible combinations of male and female gametes known as____________________?
15 / 50
Gene pool consist of____________________?
16 / 50
Rice flowers have___________________?
17 / 50
Cuscuta is an object ional weed of_____________________?
18 / 50
Concept of disruptive selection was first developed by__________________?
19 / 50
Evolution proceed on account of____________________?
20 / 50
The genetic constitution of an orgarusm is denoted by____________________?
21 / 50
Mating between distantly related individuals is known as________________?
22 / 50
Pedigree selection is used in____________________?
23 / 50
Cytoplasm fills of the cavity of a cell when if is young. But in nature cells, the cytoplasm________________?
24 / 50
Maximum mutants varieties are evolved in_________________?
25 / 50
A cross of unlike organisms is termed as____________________?
26 / 50
Duplication of chromosomes occurs during_________________?
27 / 50
An auxotroph is_________________?
28 / 50
Gametophytic self incompatibility was first reported in___________________?
29 / 50
The first organisms to appear on the earth were more like plants than animals because__________________?
30 / 50
The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?
31 / 50
Convergent improvement was proposed by________________?
32 / 50
Concept of ideotype was coined by__________________?
33 / 50
Heterosis can be fixed by___________________?
34 / 50
The term micro and macro environment was given by___________________?
35 / 50
Maximum vegetable crops belong to the family____________________?
36 / 50
Global gene pool rice is maintained at_________________?
37 / 50
Apheliotropic gene is one which___________________?
38 / 50
Increased flower size has made tetraploidy important for___________________?
39 / 50
The first attempt to show linkage in plants were done in____________________?
40 / 50
Continuous variation are attrions are attributed to____________________?
41 / 50
The diameter of mitochondria is __________________?
42 / 50
In cotton, jassids have non preference for______________________?
43 / 50
Pure line theory was developed by_______________?
44 / 50
Which one of the following does not contain both DNA and RNA__________________?
45 / 50
Amphimixis refers to_______________________?
46 / 50
RELP?s, RAPD are helpful in________________?
47 / 50
In wheat, example of durable insect resistance includes resistance to___________________?
48 / 50
Which feature is not found in all living beings____________________?
49 / 50
One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________?
50 / 50
Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?
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