Consider the following four measure (A-D) that could be taken to successfully grow chickpea in an area where bacterial blight disease is common
A) spray with Bordeaux mixture
B) control of the insect vector of the disease pathogen
C) Use of only disease-free seeds
D) Use of varieties resistant to the disease
Which two fo the above measures can control the disease?
B and C
A and B
C and D
C and D
C.
C and D
Bacterial blight of chickpea (Cicer arietinum) is caused by bacterium Xanthomonas campestris. They ejected tissue collapse and are digested by bacteria. The rapid spread of bacterial infection occurs through vascular strand. The stems and leaves of infected plant give blighted or burnt up appearance. Control measures include rogueing; 3- year crop rotation, disease free seeds, a spray of copper fungicides and antibiotics besides showing disease resistant varieties.
Bordeaux mixture is a most common fungicide, it was first discovered by Millardet in 1882 at the university of Bordeaux France to control downy mildew of grapes. It is prepared by mixing copper sulphate, lime and water in the ration of 4: 4: 50.
A transgenic food crop, which may help in solving the problem of night blindness in developing countries is
Flavr savr tomatoes
Starlink maize
Bt soybean
Bt soybean
The letter T in T-lymphocyte refer to
thyroid
thalamus
tonsil
tonsil
Which one of the following is the correct statement regarding the particular psychotropic drug specified
Hashish cause alter thought perceptions and hallucinations
Opium stimulates nervous system and cause hallucinations
Morphine leds to delusions and disturbed emotions
Morphine leds to delusions and disturbed emotions
To which type of barriers under innate immunity, do the saliva in the mouth and the tears the eyes, belong?
Cytokine barriers
cellular barriers
Physiological barriers
Physiological barriers
