In the following table identify the correct matching of the crop, its disease and the corresponding pathogen.
| Crop | Disease | Pathogen |
| Citrus | Canker | Pseudomonas rubrilineans |
| Potato | Late blight | Fusarium udum |
| Brinjal | Root-knot | Meloidogyne incognita |
| Pigeon | pea Seed gall | Phytophthora infestans |
C.
| Brinjal | Root-knot | Meloidogyne incognita |
The root knot disease of brinjal is quite common in all vegetative growing areas especially when the climate is warm, with short winters. The disease is caused by root knot nematode Meloidogyne incognita. It devitalizes root tips, develop swelling over roots and reduces flow of I water and minerals to the aerial parts. As a result yield and quality of fruits are affected. Citrus canker is a common bacterial diseases of citrus tree, caused by Xanthomonas citri. Late blight is a disease of potato caused by fungus Phytophthora infestans having blight type symptoms. Wilt of pigeon pea is caused by Fusarium udum (fungi) where wilting of seedlings and adult plants occur
Assertion : Saccharomyces cerevisiae produces acetic acid.
Reason : Trichoderma polysporum produces blood cholestrol lowering agent.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are hue but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Select the correct statement.
Acetobacter aceti produces citric acid
Saccharomyces cerevisiae is used as clot buster
Penicillium notatum restrict the growth of Staphylococci
Methanogens are found in aerobic conditions
First clinical gene therapy was given in 1992 to a 4 years old girl for
adenine deficiency
growth deficiency
adenosine deaminase deficiency
adenosine deficiency
The first bioherbicide developed in 1981 was based on
Phytophthora palmivora
Phytophthora infestans
Bacillus thuringiensis
Azadirachta indica
Assertion: A gene from Bacillus thuringiensis is incorporated in plant genome to increase their yield.
Reason: Bacillus thuringiensis has Bt toxin producing gene, which kills the larva of insects
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
One of the major difficulties in the biological control of insect pest is that
the predator develops a preference to other diets and may itself become a pest
the predator does not always survive when transferred to a new environment
the method is less effective as compared with the use of insecticides
the practical difficulty of introducing the predator to specific areas.
In transgenics, expression of transgene in target tissue is determined by
enhancer
transgene
promoter
reporter.
Which one of the following is a correct statement?
"Bt" in "Bt-cotton" indicates that it is a genetically modified organism produced through biotechnology
Somatic hybridization involves fusion of two complete plant cells carrying desired genes.
The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.
"Flavr Savr" variety of tomato has enhanced the production of ethylene which improves its taste.
In which one of the following combinations (a-d) of the number of chromosomes is the present day hexaploid wheat correctly represented
| Combination | Monosoic | Haploid | Nullisomic | Trisomic |
| (a) | 21 | 28 | 42 | 43 |
| (b) | 7 | 28 | 40 | 42 |
| (c) | 21 | 7 | 42 | 43 |
| (d) | 41 | 21 | 40 | 43 |
