All Free Agriculture MCQs with Answers

• A. 0.0056
• B. 0.006
• C. 0.0065
• D. 0.0075

Explanation: The surface tension of water near ordinary temperatures is approximately 0.0075 kg/m, equivalent to about 0.073 N/m.

• A. Coffer dam
• B. Detention dam
• C. Gravity dam
• D. Diversion dam

Explanation: A diversion dam raises or redirects part of a stream's flow into canals or other intended watercourses.

• A. Vortex pipes
• B. Silt excluders
• C. Silt ejectors
• D. All are correct

Explanation: Vortex pipes are used to draw off and flush deposited silt from a reservoir or dam basin.

• A. Water escape
• B. Spillway
• C. Channel
• D. All are correct

Explanation: A spillway is the specially designed waterway that safely releases surplus reservoir water downstream when the water level exceeds the…

• A. Buttress dam
• B. Arch dam
• C. Concrete dam
• D. Gravity dam

Explanation: A gravity dam relies mainly on its massive self-weight to resist water pressure, uplift, and sliding.

• A. A and B are correct
• B. Stable canal
• C. Alluvial canal
• D. A regime canal

Explanation: A regime or stable canal is designed to convey water without progressive silting or scouring, with its dimensions and flow conditions in…

• A. Darcy's law
• B. Pascal's law
• C. Archimed's law
• D. None

Explanation: Pascal's law states that pressure at a point in a liquid at rest is transmitted equally in all directions.

• A. Expandable
• B. Compressible
• C. In-Compressible
• D. All are correct

Explanation: Liquids undergo only a very small reduction in volume under ordinary pressure, so water is treated as incompressible in most hydraulic…

• A. Template
• B. Messanger
• C. Leader
• D. Transfer

Explanation: During transcription, DNA provides the template whose base sequence directs formation of mRNA.

• A. Endosperm
• B. Seed
• C. Ovary
• D. Fruit

Explanation: After fertilization, the ovule matures into a seed, while the ovary develops into the fruit.

• A. Joseph Kolreuter
• B. Vavilov
• C. Darwin
• D. Dobzhansky

Explanation: Darwin treated sudden variations or sports as having no major significance in evolutionary change, which he explained mainly through…

• A. SunflowerAccess Government Careers
• B. Sugarcane
• C. Maize
• D. Sugar beat

Explanation: Autopolyploidy has been used successfully in sugar beet to develop polyploid forms with improved plant size and vigor.

• A. All of these
• B. GCA & SCA effects
• C. D & H components
• D. GCA & SCA variances

Explanation: Line × tester analysis estimates general combining ability (GCA) and specific combining ability (SCA), along with their variances and…

• A. Among males
• B. Males & females
• C. Among females
• D. All of these

Explanation: A line × tester design crosses several lines with one or more testers, so the mating is between the designated female lines and male…

• A. Zuhee yaun
• B. Yaun Pingpong
• C. Yaun Longping
• D. None of these

Explanation: Yuan Longping developed and popularized commercial hybrid rice technology and is therefore widely known as the father of hybrid rice.

• A. An enzyme
• B. A vitamin
• C. A protein
• D. A hormone

Explanation: Auxin is a plant growth hormone involved in cell elongation, apical dominance, root initiation and tropic responses.

• A. tRNA
• B. mRNA
• C. rRNA
• D. None of these

Explanation: mRNA carries the genetic message and provides the codon template that ribosomes read during translation.

• A. Introduction
• B. Mutation
• C. Selection
• D. Hybridization

Explanation: Selection is regarded as the earliest plant-breeding method because farmers first retained seeds from desirable plants for the next…

• A. Both B and C
• B. Polygenes
• C. Plasmogenes
• D. Multiple alleles

Explanation: Self-incompatibility is commonly controlled by a multi-allelic S locus, where pollen is rejected when its incompatibility allele matches…

• A. Functional pollen
• B. Sterile pollen
• C. Sterile anther
• D. All of these

Explanation: Male sterility means the plant fails to produce viable, functional pollen, even though female fertility may remain normal.