1. The father of agro-meteorology in India is :
A) Swaminathan
B) L.A. Ramdas
C) Krishnan
D) Muralikrishna Nair
2. Which one of the following is the error d.f. for a RCBD experiment with six treatments replicated five times ?
A) 15
B) 12
C) 20
D) 24
3. The state also known as ‘Rice Bowl of India’ is :
A) A.P.
B) Chhattisgarh
C) U.P.
D) Kerala
4. Which one of the following crop is commonly associated with Orobanche weed ?
A) Sorghum
B) Rice
C) Tomato
D) Maize
5. Which one of the following clay mineral is rich in potassium ?
A) Illite
B) Vermiculite
C) Kaolinite
D) Silicate
6. The element responsible for pollen development is :
A) Calcium
B) Nitrogen
C) Boron
D) Magnesium
7. The soil water potential of ultimate wilting point is :
A) −0.3 bar
B) −15 bar
C) −33 bar
D) −60 bar
8. Which one of the following countries has largest area under drip irrigation in the world ?
A) USA
B) India
C) Australia
D) Israel
9. Which one of the following climate region is predominant in acid soils ?
A) Temperate
B) Arid
C) Humid
D) Snowfall
10. Which one of the following is the data distribution when mean and median values are same ?
A) Poisson
B) Gamma
C) Gaussian
D) Normal
11. The foodgrain production in India during 2016–17 was :
A) 255 mt
B) 265 mt
C) 272 mt
D) 285 mt
12. Which one of the following micro-organism oxidizes nitrite to nitrate ?
A) Nitrosomonas
B) Azotobacter
C) Clostridium
D) Nitrobacter
13. Trickle irrigation is recommended for :
A) Mango
B) Coriander
C) Radish
D) Leafy vegetables
14. Which one of the following is the most important grain crop in the world ?
A) Paddy
B) Barley
C) Sorghum
D) Wheat
15. Capacity of soil that resists sudden change in pH of soil is called :
A) Buffering capacity
B) Cation exchange capacity
C) Anion exchange capacity
D) Base saturation
16. Organic group that are permanently bound to the enzymes is :
A) Prosthetic group
B) Activators
C) Co-enzymes
D) Co-activators
17. A process where a single cell is divided into two identical daughter cells is called :
A) Mitosis
B) Meiosis
C) Cytokinesis
D) Polyploidization
18. Totipotency in plants is present in :
A) Phloem
B) Cork
C) Cambium
D) Meristem
19. The cultivation of crop from the regrowth of stubbles of crop after harvest is called :
A) Arrowing
B) Reaping
C) Ratooning
D) Seasoning
20. A plant breeder wants to develop a disease resistant variety. What should he do first ?
A) Hybridization
B) Mutation
C) Selection
D) Mass selection
21. Although a deficiency of any one of the following elements may result in chlorosis, only one of these elements is found in chlorophyll. Which is it ?
A) Chlorine
B) Iron
C) Magnesium
D) Zinc
22. Stomata pore opens when :
A) Water from surrounding cells enter into guard cells
B) Water from guard cells goes to surrounding cells
C) The plants are in dark
D) No movement of water occurs between guard cells and surrounding cells
23. Diversity is quite high in organisms which are produced through :
A) Asexual reproduction
B) Budding
C) Binary fusion
D) Sexual reproduction
24. The cause of the Great Bengal Famine was :
A) Rust of wheat
B) Brown spot of rice
C) Blast of rice
D) Karnal bunt of wheat
25. Cell wall lacking organism is :
A) Fungi
B) Virus
C) Bacteria
D) Mycoplasma
26. The fruit of rape seed and mustard plant is known as :
A) Caryopsis
B) Grain
C) Pod
D) Siliqua
27. A condition in which pollination and fertilization takes place in an unopened flower is known as :
A) Apogamy
B) Homogamy
C) Polygamy
D) Cleistogamy
28. Conservation Agriculture forms a component of :
A) Sustainable agriculture
B) Intensive agriculture
C) Extensive agriculture
D) Organic farming
29. Cell linkage theory was proposed by :
A) Schleiden and Schwann
B) Hooke
C) Linnaeus
D) Mendel
30. During photosynthesis, oxygen is generated from :
A) CO₂
B) Water
C) CO₂ & water
D) None of these
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