All Free Agriculture MCQs with Answers
Every Agriculture question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
2,315 questions · page 67 of 116
- A. 100 meters
- B. 50 meters
- C. 200 meters
- D. 3 metersSearch Public Records
Explanation: Okra foundation seed requires a 200-metre isolation distance to prevent unwanted cross-pollination and maintain genetic purity.
Correct answer: 200 meters- A. Zerophytes
- B. Gymnosperm
- C. Bryophytes
- D. Angiosperm
Explanation: Angiosperms are highly evolved seed-producing plants whose seeds are enclosed within fruits.
Correct answer: Angiosperm- A. Both A & B
- B. Partually self pollination
- C. Partially cross pollination
- D. Cross pollination
Explanation: Okra is mainly self-pollinated but permits some natural cross-pollination, so it is described as partially self-pollinated.
Correct answer: Both A & B- A. Self pollination
- B. Cross pollination
- C. Self fertilization
- D. Partial self fertilization
Explanation: Cauliflower is cross-pollinated because its self-incompatibility system prevents effective fertilization by its own pollen.
Correct answer: Cross pollination- A. Zygote formation
- B. Fertilization
- C. Gametogenesis
- D. REproduction
Explanation: Gametogenesis is the formation of gametes, including male pollen gametes and female egg cells, through specialized reproductive processes.
Correct answer: Gametogenesis- A. Polygamy
- B. None of the above
- C. Homogamy
- D. Autogamy
Explanation: Autogamy is pollination in which pollen reaches the stigma of the same flower.
Correct answer: Autogamy1327. Direct effect of pollen grains on the female tissues of the ovary is called__________________?
- A. Metaxenia
- B. Xenia
- C. Pollination
- D. None of the above
Explanation: Metaxenia is the effect of pollen or the developing male parent on maternal tissues such as the ovary wall or fruit.
Correct answer: Metaxenia- A. Allogamy
- B. Pollination
- C. Crossing
- D. Breeding
Explanation: Pollination is specifically the transfer of pollen from anther to stigma, whether by wind, insects, animals or another agent.
Correct answer: Pollination- A. Microsporogenesis
- B. Gametogenesis
- C. Megasporogenesis
- D. Tapetium
Explanation: Megasporogenesis is the formation of megaspores in the ovule, which leads to the female reproductive pathway.
Correct answer: Megasporogenesis- A. Photophosphorrylation
- B. Photosynthesis
- C. Photoperiodism
- D. None of the above
Explanation: Photophosphorylation is the light-driven formation of ATP through an electron transport chain, usually across the thylakoid membrane.
Correct answer: Photophosphorrylation- A. Gamete formation
- B. Fertilization
- C. Interaction
- D. All the above
Explanation: The fusion of male and female gametes is called fertilization, producing a zygote.
Correct answer: Fertilization- A. Histology
- B. Ontogeny
- C. Phylogemy
- D. None of the above
Explanation: Phylogeny refers to the evolutionary history and relationships of plant species, whereas ontogeny concerns the development of an…
Correct answer: Phylogemy- A. 2-4 micron
- B. 1-4 micron
- C. 40-70 micron
- D. 0.5-2 micron
Explanation: Mitochondria are usually about 0.5 to 2 micrometres in diameter, although their length and shape can vary considerably.
Correct answer: 0.5-2 micron- A. Ribosomes
- B. Plastid
- C. Mitochondria
- D. Golgi bodies
Explanation: Plastids, especially chloroplasts, synthesize carbohydrates through photosynthesis using light energy, carbon dioxide, and water.
Correct answer: Plastid- A. Mitochondria
- B. Nucleus
- C. Chloroplast
- D. Chromosomes
Explanation: The nucleus directs gene expression and controls the synthesis of proteins and other components needed for protoplasm formation.
Correct answer: Nucleus- A. Movement
- B. Respiration
- C. Growl
- D. Protein synthesis
Explanation: Ribosomes translate messenger RNA into polypeptide chains, making them the cellular sites of protein synthesis.
Correct answer: Protein synthesis- A. Thymine present in DNA and Uralic in RNA
- B. Deoxyribose and thymine is present in DNA and ribose and Ural in RNA
- C. Ribose and thymine in DNA and deoxyribose and uracil in RNA
- D. Deoxyribose in DNA and ribose in RNA
Explanation: DNA contains deoxyribose and thymine, whereas RNA contains ribose and uracil.
Correct answer: Deoxyribose and thymine is present in DNA and ribose and Ural in RNA- A. Van Beneden
- B. T. Boveri
- C. Walleye
- D. Aluman
Explanation: The term chromosome was coined by Heinrich Wilhelm Waldeyer in 1888. Option c is evidently intended to represent Waldeyer, but the name is…
Correct answer: Walleye- A. Protein
- B. Ribosome
- C. Nucleic acid
- D. Carbohydrates
Explanation: Nucleic acids, especially DNA, store and transmit hereditary information, while RNA helps express much of that information.
Correct answer: Nucleic acid- A. Episode
- B. Co dominance
- C. Dominance
- D. Epistasis
Explanation: Epistasis occurs when one gene masks or modifies the expression of a non-allelic gene.
Correct answer: Epistasis