Unit 1: Crop Production Package of Practices for Kharif Major Cereals - Practice Quiz

1 Which region is widely considered a major centre of origin of cultivated Asian rice?

2 Which continent produces and consumes most of the world's rice?

3 Which Indian state is a major rice-producing state?

4 What is the main economic use of rice?

5 Which useful product is obtained from the outer brown layer removed during rice milling?

6 Which soil is generally suitable for lowland rice cultivation because it retains water well?

7 Which climatic condition is most suitable for rice growth?

8 Which of the following is a commonly cultivated high-yielding rice variety in India?

9 What is the usual first step in transplanted rice cultivation?

10 What is the process of moving rice seedlings from a nursery to the main field called?

11 Which region is considered the primary centre of origin of maize?

12 Maize is widely cultivated in which type of regions?

13 Which Indian state is a major producer of maize?

14 Which is a major use of maize grain?

15 Which industrial product is commonly manufactured from maize?

16 Which soil condition is most suitable for maize cultivation?

17 Which weather condition can seriously damage a maize crop?

18 Which of the following is an improved maize variety or hybrid?

19 Which sowing method is commonly used to maintain proper spacing in maize?

20 At which stage is maize generally harvested for grain?

21 Archaeological evidence and the diversity of cultivated rice suggest that the primary centre of origin of Asian rice is associated with which region?

22 A farmer in a warm, humid lowland region with seasonal flooding is selecting a cereal crop. Which characteristic makes rice especially suitable for this location?

23 Which combination correctly matches major rice products with their source parts?

24 Which field is generally most suitable for transplanted lowland rice?

25 Rice requires abundant water during much of its growth, but which condition is especially important during flowering and grain filling?

26 A farmer wants a rice variety that can escape late-season drought by completing its life cycle quickly. Which varietal trait is most useful?

27 Why is puddling commonly carried out before transplanting rice seedlings?

28 Rice seedlings are often transplanted at a relatively young age because young seedlings generally establish more rapidly and produce:

29 A rice field remains continuously flooded with unnecessarily deep water. Which management change is most likely to improve water-use efficiency without exposing the crop to prolonged drought?

30 Which situation is most likely to reduce rice yield even when the crop receives adequate nitrogen?

31 Maize is believed to have been domesticated primarily in which region?

32 Maize can be grown over a wide geographical range mainly because it has:

33 Which feature explains why maize is important both as a food crop and as an industrial raw material?

34 Which soil would generally provide the best conditions for a high-yielding maize crop under rainfed management?

35 A maize crop experiences drought around silking and pollen shed. What is the most likely effect on yield?

36 A farmer wants to maximize yield under uniform management and has access to quality seed each season. Which maize type is generally the most appropriate choice?

37 Which varietal characteristic is most valuable for reducing lodging losses in a high-input maize crop?

38 Why should maize be planted at an optimum and uniform spacing rather than at a very high plant density?

39 A maize farmer wants to apply nitrogen efficiently. Which practice is generally most suitable for reducing losses and matching crop demand?

40 Which field condition is most likely to cause a major maize yield reduction during the first month after emergence?

41 Which inference best supports the accepted origin of cultivated Asian rice (Oryza sativa) in the Yangtze basin of China?

42 A farmer in a humid tropical delta wants a rice type that flowers when day length decreases and is adapted to warm conditions. Which ecogeographical group is most likely suitable?

43 Why can a rice-processing policy that increases the recovery of broken rice still improve food-system efficiency?

44 Which soil condition most directly explains why puddling can benefit transplanted lowland rice but impair the following upland crop?

45 Rice plants show severe sterility during flowering despite adequate water and nutrients. Which weather event is the most probable cause?

46 A variety is selected for flood-prone fields where plants may remain submerged for about two weeks. Which trait should receive the greatest priority?

47 Which varietal combination is most appropriate when a rice-growing region has saline irrigation water, frequent lodging, and a short transplanting window?

48 In a transplanted rice field, seedlings are excessively old, planted deeply, and kept continuously flooded immediately after transplanting. Which yield loss mechanism is most likely?

49 A rice crop has many panicles but a low grain yield. Grain sampling shows poor grain filling rather than excessive empty hills. Which yield component should be investigated first?

50 Which irrigation strategy is most defensible for a well-leveled lowland rice field when the goal is to reduce water use without exposing plants to severe drought?

51 A farmer incorporates large amounts of fresh, high-carbon straw immediately before rice transplanting. Which management adjustment is most appropriate?

52 Which distribution pattern best explains why rice is dominant in monsoonal Asian plains but also cultivated in irrigated regions outside Asia?

53 Which evidence most strongly links modern maize to teosinte rather than to an independent domestication from an unrelated grass?

54 Why can maize be grown across a wider range of latitudes than many tropical cereals?

55 A region diverts a large share of maize from food to feed and bioethanol. Which consequence is most technically accurate?

56 A maize field has adequate rainfall but remains waterlogged after storms. Which yield penalty is most likely if waterlogging occurs near tasseling and silking?

57 Why is a deep, well-drained loam generally preferred for high-yielding maize compared with a shallow compact clay soil?

58 A farmer wants to save seed from a high-performing maize hybrid for the next season. Why is this practice generally unsuitable?

59 Which maize cultivar choice best matches a short, frost-limited growing season with a narrow harvest window?

60 A maize crop has adequate plant population and healthy leaves, but silks emerge several days after pollen shed during hot, dry weather. What is the most likely yield consequence?