List of practice Questions

Epiricania melanoleuca belongs to Lepidoptera is a -

The two population ratio of Snyders used to test equilibrium for dominant genes are which of the following?

In 1923, who described the theory of QTL mapping?

The technique of ELISA is based on which of the following?

Which of the following is a common eukaryotic host for cloning?

For the work on split genes, who won Nobel Prize of Medicine in 1993?

Match the LIST-I with LIST-II \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Monosomics developed)} & \textbf{LIST II (Researchers)} \\ \hline A. \ \text{Oat} & I. \ \text{Clausen and co-workers} \\ B. \ \text{Wheat} & II. \ \text{Rajhathy and co-workers} \\ C. \ \text{Tobacco} & III. \ \text{Sears and co-workers} \\ D. \ \text{Cotton} & IV. \ \text{Endrizzi and associates} \\ \hline \end{array} \]

NPV is mostly used to control-

The prokaryotic genetic system contains-

Which of the following statements are right about “Guttation”? A. The term is given by Stephan Hales
B. It is caused due to root pressure
C. Normally it occurs in the day
D. Exudation of water with salt and minerals through hydathode

Examples of short-day plants are A. Tobacco, Soybean and Rice
B. Tobacco, Soybean and Wheat
C. Tobacco, Barley and Rice
D. Castor, Barley and Sugar beet

Long day plants require-

The following statements support the ‘Dark reaction’ in photosynthesis: A. Dark phase of photosynthesis is CO\textsubscript{2} fixation
B. Dark Phase is temperature sensitive
C. Dark reactions don't require light
D. Also called as Dark man reaction

The Tristeza disease in citrus is caused by-

The Bordeaux mixture consists of-

The Irish potato famine that occurred in North Europe during 1845 was caused by-

Match the LIST-I with LIST-II and choose the correct answer from the options given below: \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Common powdery mildews)} & \textbf{LIST II (Causal organism)} \\ \hline A.\ \text{Powdery mildews of barley} & I.\ \text{Cercosphaera leucotricha} \\ B.\ \text{Powdery mildews of peas} & II.\ \text{Uncinula necator} \\ C.\ \text{Powdery mildews of grape vines} & III.\ \text{Erysiphe polygoni} \\ D.\ \text{Powdery mildews of apple} & IV.\ \text{Erysiphe graminis var. hordei} \\ \hline \end{array} \]

Important characteristics of phytopathogenic bacteria are- A. They are saprophytes
B. They do not infect animals
C. They are invariably rod-shaped and flagellate
D. All are Gram -ve

The black heart of potato is a result of-

DIPA describes the followings- A. Directorate of Insect and Pest Authority
B. Destructive Insects and Pests Act
C. It came into force in 1914
D. Legal control of insects

The most suitable fumigants for quarantine purposes is-

Match the LIST-I with LIST-II and choose the correct answer from the options given below: \[ \begin{array}{|l|l|} \hline \textbf{LIST I (Insect pests of citrus)} & \textbf{LIST II (Scientific name)} \\ \hline A. \ \text{Psylla} & I. \ \textit{Papilio demoleus} \\ B. \ \text{Leaf miner} & II. \ \textit{Diaphorina citri} \\ C. \ \text{Lemon butterfly} & III. \ \textit{Toxoptera aurantii} \\ D. \ \text{Aphids} & IV. \ \textit{Phyllocnistis citrella} \\ \hline \end{array} \]

The purpose of randomization in a field experiment is to-

Father of Plant Physiology is-

Break-even point can be estimated by using the formula-