Agriculture Quizzes For FCI AG III Technical Phase II 2023 – 23rd February

Q1. The most striking symptom of false smut of rice (Claviceps oryzae-sativae) is/are________
(a) Transformation of individual kernels into large, velvety, green balls
(b) Sometimes the size of kernel is more than twice the diameter of normal grain
(c) The colour of kernels finally changes to greenish black
(d) All of these

Q2. Margosa is a highly effective product in reducing root-knot population belongs to____________
(a) Acacia arabica
(b) Azadirachta indica
(c) Citrullus colosynthes
(d) Pongamia glabra
Q3. In bacteria, variability is caused by______________
(a) Conjugation
(b) Transformation
(c) Transduction
(d) All of these
Q4. Micrografting is used to produce plants free from_________________
(a) Virus
(b) RLO’s
(c) MLO’s
(d) Bacteria
Q5. In plants buckling, puckering and blistering symptoms are produced by________________
(a) Bacteria
(b) Fungi
(c) Viruses
(d) Mycoplasma

Q6. Late Blight of potato causes loss in world potato production____________
(a) 5 -10%
(b) 10 -15%
(c) 10 – 20%
(d) 50%
Q7. Most fungal diseases spread out in_________
(a) Dry & Cold weather
(b) Wet & Cold weather
(c) Dry & Hot weather
(d) Wet & Hot weather

Q8. Bordeaux Mixture was discovered in_______________
(a) 1887
(b) 1837
(c) 1882
(d) 1911
Q9. Peach leaf curl was first originated from_____________
(a) Japan
(b) USA
(c) Europe
(d) China
Q10. Bacteria reproduce asexually by means of___________
(a) Fragmentation
(b) Budding
(c) Binary fission
(d) Multiplication

Solutions

S1. Ans (d)
Sol. All of the mentioned symptoms are most striking symptom of false smut of rice.
S2. Ans (b)
Sol. Margosa is a highly effective product in reducing root-knot population belongs to Azadirachta indica
S3. Ans (d)
Sol. In bacteria variability cause by Conjugation, Transformation, Transduction.
S4. Ans (a)
Sol. Micrografting is commonly used to viruses’ free plant, and to study incompatibility mechanisms in heterografts, leading to an early diagnosis of incompatibilities.
S5. Ans (c)
Sol. In plants buckling, puckering and blistering symptoms are produced by viruses.
S6. Ans (c)
Sol. Across potato production estimates of 20% crop losses have been associated with late blight causing more than £3.5 billion losses worldwide. Late blight caused by the fungus Phytophthora infestans is the most important disease of potato that can result into crop failures in a short period if appropriate control measures are not adopted.
S7. Ans (d)
Sol.Most fungal diseases are dependent on moisture, especially foliage or leaf spot diseases. Many of these disease-causing fungi spread by microscopic airborne spores that require moisture to germinate, infect and colonize our plants, A hot environment will encourage fungi growth.
S8. Ans (c)
Sol.The Bordeaux mixture fungicide (copper sulfate and lime), discovered accidentally in 1882, was used successfully against vine downy mildew; this compound is still employed to combat it and potato blight.
S9. Ans (b)
Sol. Peach leaf curl was first introduced in America in 1852 and has now spread all over the country.
S10. Ans (c)
Sol. Most bacteria rely on binary fission for propagation. Conceptually this is a simple process; a cell just needs to grow to twice its starting size and then split in two.