| |

LEA Review: Genetics & Plant Breeding MCQs with Answers

Byआदित्य अभिषेक

Hey students, preparing for your upcoming agriculture examinations such as PRC LEA, UPSC, ICAR JRF, etc. but confused about whether your preparation is going well or not? Well, no more! At Agriculture Review, we keep updating new test series based on previous years’ questions of the Examination for Agriculturists.

📘 How to Attempt These LEA Based MCQs

Follow these simple steps to simulate exam conditions, boost accuracy, and learn from mistakes effectively.

  1. Read each question carefully. Look for keywords like “primary,” “most common,” या “best suited.”
  2. Use the elimination method. Cross out obviously wrong options first to narrow choices.
  3. Time management: Aim for 1 minute per question (total 50 minutes). Mark hard questions and return to them later.
  4. Think conceptually. LEA questions often test application — ask yourself why an answer fits.
  5. Keep calculations minimal. Most MCQs are conceptual; when calculations appear, write steps clearly.
  6. After finishing, review answers. Check the answer key only after completing the whole test to assess time and accuracy.
  7. Create a revision list. Note down topics you missed and review them in short, focused sessions.
Quick tips:
  • Answer easy questions first to secure marks quickly.
  • For disease questions, remember causative agents (virus/bacteria/protozoa) and prevention methods (vaccination/biosecurity).
  • Memorize common breeds, top-producing regions, and key lab tests (e.g., CMT for mastitis).

Tip: Repeat the quiz weekly and track progress. Consistent practice beats last-minute cramming.

You can also join our Facebook Broadcast Channel, where we regularly share newly updated questions. All the best for today—I hope you become a registered Agriculturist soon!

JOIN BROADCAST CHANNEL
genetics-plant-breeding-mcqs
Genetics & Plant Breeding MCQs

Genetics & Plant Breeding MCQs

1. Which of the following laws of inheritance explains the separation of alleles during gamete formation?

2. A cross between two heterozygous tall pea plants (Tt × Tt) results in what genotypic ratio for height?

3. Incomplete dominance is best illustrated by which classic example?

4. Which cytological technique is commonly used to determine the chromosome number and structure in plant cells?

5. Which of the following plant breeding methods is most suitable for improving self-pollinated crops?

6. Heterosis or hybrid vigor in plants is primarily due to which genetic phenomenon?

7. The development of polyploid plants is commonly induced using which chemical mutagen?

8. The Philippine Rice Research Institute (PhilRice) is primarily involved in which area of crop improvement?

9. Marker-Assisted Selection (MAS) in plant breeding primarily depends on which type of molecular markers?

10. The National Seed Industry Council (NSIC) in the Philippines is responsible for:

11. Which plant breeding method involves selecting the best plants from a genetically variable population without controlled pollination?

12. The primary objective of recurrent selection in cross-pollinated crops is to:

13. The Hardy–Weinberg equilibrium is disturbed by which of the following factors?

14. The use of radiation such as gamma rays in plant breeding is primarily applied in:

15. Which of the following is a key advantage of using single seed descent (SSD) in breeding self-pollinated crops?

16. Which of the following plant breeding techniques is most useful in asexually propagated crops like banana or potato?

17. In plant breeding, “backcrossing” is mainly used for:

18. Quantitative traits are generally controlled by:

19. Which of the following is a common example of a DNA-based molecular marker used in plant breeding?

20. Which of the following agencies is responsible for the enforcement of the Plant Variety Protection Act (RA 9168) in the Philippines?

21. In maize breeding, the development of double-cross hybrids primarily aims to:

22. The appearance of both alleles equally in the phenotype, as seen in human AB blood group, is an example of:

23. Which plant breeding approach involves regenerating plants from cultured cells or tissues under aseptic conditions?

24. In quantitative genetics, heritability in the narrow sense measures the proportion of phenotypic variance due to:

25. The genetic phenomenon where a single gene influences multiple traits is known as:

26. Which cytoplasmic organelle in plant cells contains its own DNA and is maternally inherited?

27. The crossing of two different pure lines to obtain superior F1 hybrids is known as:

28. A plant breeder interested in improving drought tolerance should focus on which type of selection method?

29. Which genetic concept explains the tendency of certain genes to be inherited together because they are located close to each other on the same chromosome?

30. Which of the following statistical designs is most suitable for comparing a large number of genotypes in preliminary yield trials?

31. In plant breeding, the term “genetic advance” refers to:

32. The first successful transgenic crop developed and commercialized worldwide was:

33. Which of the following techniques is commonly used to identify polymorphism in DNA sequences?

34. A plant breeder observes that a crop maintains uniformity across generations without segregation. This indicates the crop is:

35. The process of selecting superior individuals from a population and allowing them to intermate for several generations is known as:

36. A polyploid organism possessing three complete sets of chromosomes (3n) is termed as:

37. Which component of genetic variance is responsible for the resemblance between parents and offspring?

38. In maize, heterosis is mainly exploited through the production of:

39. The technique used to identify and isolate a gene responsible for a particular trait using known DNA markers is:

40. In mutation breeding, the mutagen EMS (ethyl methanesulfonate) is classified as a:

41. A rice breeder aims to develop a variety resistant to bacterial blight by crossing a resistant donor with a high-yielding susceptible variety, followed by repeated backcrossing. This approach refers to:

42. Which of the following is the main advantage of synthetic varieties over hybrid varieties in maize breeding?

43. A banana breeder prefers somaclonal variation for developing improved varieties because bananas are:

44. The “male sterility” system used for producing hybrid rice in the Philippines is primarily based on:

45. In plant biotechnology, Agrobacterium tumefaciens is used for genetic transformation because:

46. In a hybridization program, the F₂ generation is primarily used for:

47. The genetic mechanism of apomixis helps in:

48. In breeding programs for self-pollinated crops, the most commonly used selection method for early generation testing is:

49. A peanut breeder crosses two high-yielding but disease-susceptible genotypes to generate variability. This type of hybridization is termed as:

50. Which of the following terms refers to the portion of total phenotypic variance that is heritable and can be transmitted to offspring?

Your Quiz Result

Share your score!

यदि आपका कोई प्रश्न, विचार या सुझाव है तो कृपया नीचे टिप्पणी करें। आप फेसबुक, इंस्टाग्राम, कू और व्हाट्सएप मैसेंजर पर भी एग्रीकल्चर रिव्यू से जुड़ सकते हैं।

To learn N-P-K Computations, try checking out our tool: एनपीके कैलकुलेटर

आदित्य अभिषेक ने एसडीएसयूवी, उत्तराखंड से कृषि में स्नातक की पढ़ाई पूरी की है। वह कृषि और गृह बागवानी पर सीखने और ज्ञान प्रदान करने पर ध्यान केंद्रित करते हैं। उन्होंने कृषि, बागवानी और दुकान की गुणवत्ता वाले उत्पादों और सेवाओं की बेहतर प्रथाओं को सीखने के लिए सभी प्रकृति उत्साही लोगों के लिए एक सामान्य मंच के रूप में एग्रीकल्चर रिव्यू बनाई।

Similar Posts

One Comment

प्रातिक्रिया दे

आपका ईमेल पता प्रकाशित नहीं किया जाएगा. आवश्यक फ़ील्ड चिह्नित हैं *