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Plant Breeding & Genetics Quiz 2

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Plant Breeding & Genetics Quiz 2

1 / 50

The diameter of mitochondria is __________________?

2 / 50

The geometrical device that helps in visnalizing all the possible combinations of male and female gametes known as____________________?

3 / 50

In wheat, example of durable insect resistance includes resistance to___________________?

4 / 50

Which one of the following does not contain both DNA and RNA__________________?

5 / 50

Amphimixis refers to_______________________?

6 / 50

Evolution proceed on account of____________________?

7 / 50

Development of embryo from egg cell without fertilization is known as___________________?

8 / 50

Nobel prize for the discovery of operon model was awarded to__________________?

9 / 50

Concept of disruptive selection was first developed by__________________?

10 / 50

In potato food is stored in__________________?

11 / 50

Gene pool consist of____________________?

12 / 50

Convergent improvement was proposed by________________?

13 / 50

The term micro and macro environment was given by___________________?

14 / 50

Many groups of insects have developed resistance to DDT and other insecticides as a result of____________________?

15 / 50

The crossing of a yomozygous tall plant and a homozygous dwarf plant would yield plants in the ratio of_________________?

16 / 50

The offspring of a cross between twp individuals differing in at least one set of characters is called__________________?

17 / 50

A heterogeneous population include_______________?

18 / 50

The first attempt to show linkage in plants were done in____________________?

19 / 50

Pedigree selection is used in____________________?

20 / 50

RELP?s, RAPD are helpful in________________?

21 / 50

Continuous variation are attrions are attributed to____________________?

22 / 50

Which feature is not found in all living beings____________________?

23 / 50

Cuscuta is an object ional weed of_____________________?

24 / 50

Pure line theory was developed by_______________?

25 / 50

Mating between distantly related individuals is known as________________?

26 / 50

In cotton, jassids have non preference for______________________?

27 / 50

A cross of unlike organisms is termed as____________________?

28 / 50

One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________?

29 / 50

Increased flower size has made tetraploidy important for___________________?

30 / 50

Maximum vegetable crops belong to the family____________________?

31 / 50

Rice flowers have___________________?

32 / 50

In allogamous species, a true breeding line obtained by continuous inbreeding is__________________?

33 / 50

Maximum mutants varieties are evolved in_________________?

34 / 50

When a cell with 40 chromosomes undergoes meiosis each of the four resulting cells has_____________________?

35 / 50

Global gene pool rice is maintained at_________________?

36 / 50

Under drought conditions, there is an increase in__________________?

37 / 50

Apheliotropic gene is one which___________________?

38 / 50

Cytoplasm fills of the cavity of a cell when if is young. But in nature cells, the cytoplasm________________?

39 / 50

An auxotroph is_________________?

40 / 50

The first organisms to appear on the earth were more like plants than animals because__________________?

41 / 50

If the leaf cells have eight chromosomes it is mostly likely that__________________?

42 / 50

Heterosis can be fixed by___________________?

43 / 50

Prescribed germination percentage of foundation seed of groundnut____________________?

44 / 50

The genetic constitution of an orgarusm is denoted by____________________?

45 / 50

Gametophytic self incompatibility was first reported in___________________?

46 / 50

Concept of ideotype was coined by__________________?

47 / 50

The reason why mutations which are harmful do not eliminated from gene pool is that___________________?

48 / 50

Duplication of chromosomes occurs during_________________?

49 / 50

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

50 / 50

Germplasm gene banks for different crop plants in world are about_____________________?

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