# Sardar Krushinagar Dantiwada Agricultural Uiversity 2010 B.Sc Agriculture for competitive - university paper

MULTIPLE option ques.

B.Sc Agriculture

(For Competitive Examination)

The relation ranging from the mean and variance of chi-square distn with n d.

**f.**is

**a.**mean = two variance

**b.**two mean = variance

**c.**mean = variance

**d.**none of the above

Most of the non-parametric methods utilize measurements on

**a.**interval scale

**b.**ratio scale

**c.**ordinal scale

**d.**nominal scale

Two random variables X and Y are stated to be independent if

**a.**E(XY) = 1

**b.**E(XY) = 0

**c.**E(XY) = E(X).E(Y)

**d.**E(XY) = any constant value

Chi-square distribution curve in respect of symmetry is

**a.**positively skew

**b.**negatively skew

**c.**symmetrical

**d.**any of the above

Coefficient of skewness for normal distribution is

**a.**greater than 3

**b.**less than 3

**c.**equal to 3

**d.**zero

If ?yx and ?xy are 2 regression coefficients, they have :

**a.**identical sign

**b.**opposite sign

**c.**either identical or opposite signs

**d.**nothing can be stated

A sample consists of :

**a.**all units of the population

**b.**50% units of the population

**c.**5% units of the population

**d.**any fraction of the population

The number of all possible samples of size 2 from a population of four units as:

**a.**2 (b) 4

**(**eight

**c)****(**12

**d)**A population consisting of all the items which are physically current is called :

**a.**hypothetical population

**b.**real population

**c.**infinite population

**d.**none of the above

A function of variates for estimating a parameter is called :

**a.**an estimate

**b.**an estimator

**c.**a frame

**d.**a statistic

If all the observations in a set of observations are same, the variance of the set of values is :

**a.**zero

**b.**one

**c.**infinity

**d.**not possible to compute

Lichen is a symbiotic association ranging from fungi and

a) Algae

b) Virus

c) Protozoa

d) Plants

Frankia belongs to which of the subsequent groups of microorganisms

a) Cyanobacteria

b) Green algae

c) Methanobacterium

d) Actinomycetes

Which of the subsequent microorganisms show associative symbiosis

a) Azotobacter

b) Azospirillum

c) Spirulina

d) Rhizobium

Streptomycin was discovered by

a) Waksman

b) Pasteur

c) Leeuwenhoek

d) Winogradsky

Penicillin was discovered by

a) Alexander Fleming

b) Lederberg

c) Galileo

d) Joseph Lister

Bacteriophage belong to which group of microorganism

a) Bacteria

b) Virus

c) Fungi

d) Cyanobacteria

The term Rhizosphere was coined by

a) Hiltner

b) Waksman

c) Ruinen

d) Kary Mullis

The use of condenser in microscope was introduced by

a) Abbe

b) Pasteur

c) Adolf Mayer

d) Watson and Crick

Blue mold rot in bread is caused by

a) Penicillium

b) Rhizopus

c) Mucor

d) Salmonella

Spontaneous generation theory was finally disproved by

a) Louis Pasteur

b) Robert Koch

c) Paul Ehrlich

d) Metchnikoff

Ray fungi is a different name of which of the subsequent microorganisms

a) Actinomycetes

b) Cyanobacteria

c) Fungus

d) Lichen

MULTIPLE CHOICE QUESTIONS

B.Sc Agriculture

(For Competitive Examination)

The
relation between the mean and variance of chi-square dist^{n }with n
d.f. is

a. mean = 2 variance

b. 2 mean = variance

c. mean = variance

d. none of the above

Most of the non-parametric methods utilize measurements on

a. interval scale

b. ratio scale

c. ordinal scale

d. nominal scale

Two random variables X and Y are said to be independent if

a. E(XY) = 1

b. E(XY) = 0

c. E(XY) = E(X).E(Y)

d. E(XY) = any constant value

Chi-square distribution curve in respect of symmetry is

a. positively skew

b. negatively skew

c. symmetrical

d. any of the above

Coefficient of skewness for normal distribution is

a. greater than 3

b. less than 3

c. equal to 3

d. zero

If b_{yx} and b_{xy }are two
regression coefficients, they have :

a. same sign

b. opposite sign

c. either same or opposite signs

d. nothing can be said

A sample consists of :

a. all units of the population

b. 50% units of the population

c. 5% units of the population

d. any fraction of the population

The number of all possible samples of size two from a population of 4 units as:

a. 2 (b) 4 (c) 8 (d) 12

A population consisting of all the items which are physically present is called :

a. hypothetical population

b. real population

c. infinite population

d. none of the above

A function of variates for estimating a parameter is called :

a. an estimate

b. an estimator

c. a frame

d. a statistic

If all the observations in a set of observations are same, the variance of the set of values is :

a. zero

b. one

c. infinity

d. not possible to calculate

Lichen is a symbiotic association between fungi and

a) Algae

b) Virus

c) Protozoa

d) Plants

Frankia belongs to which of the following groups of microorganisms

a) Cyanobacteria

b) Green algae

*c)
**Methanobacterium*

d) Actinomycetes

Which of the following microorganisms show associative symbiosis

*a)
**Azotobacter*

*b)
**Azospirillum*

*c)
**Spirulina*

*d)
**Rhizobium*

* *

Streptomycin was discovered by

a) Waksman

b) Pasteur

c) Leeuwenhoek

d) Winogradsky

Penicillin was discovered by

a) Alexander Fleming

b) Lederberg

c) Galileo

d) Joseph Lister

Bacteriophage belong to which group of microorganism

a) Bacteria

b) Virus

c) Fungi

d) Cyanobacteria

The term Rhizosphere was coined by

a) Hiltner

b) Waksman

c) Ruinen

d) Kary Mullis

The use of condenser in microscope was introduced by

a) Abbe

b) Pasteur

c) Adolf Mayer

d) Watson and Crick

Blue mold rot in bread is caused by

*a)
**Penicillium*

*b)
**Rhizopus*

*c)
**Mucor*

*d)
**Salmonella*

* *

Spontaneous generation theory was finally disproved by

a) Louis Pasteur

b) Robert Koch

c) Paul Ehrlich

d) Metchnikoff

Ray fungi is another name of which of the following microorganisms

a) Actinomycetes

b) Cyanobacteria

c) Fungus

d) Lichen

Earning: Approval pending. |