All Free Agriculture MCQs with Answers

• A. 9:3:3:1
• B. 9:7
• C. 9:9:9:3:3:3:1
• D. 1:4:6:4:1Government

Explanation: With two additive gene pairs affecting wheat-kernel colour, the F2 classes follow the binomial distribution 1:4:6:4:1, from the two-locus…

• A. B. Protest
• B. Protophyta
• C. Protozoa
• D. Prokaryotes

Explanation: Protophyta is an older term for simple, mostly unicellular plant-like organisms.

• A. Audacious
• B. Heterotrophic
• C. Autotrophic
• D. Phototrophic

Explanation: Autotrophs manufacture organic substances from simple inorganic materials such as carbon dioxide and water.

• A. Testes
• B. Muscles
• C. Ovaries
• D. Salivary glands

Explanation: Drosophila has giant polytene chromosomes in its larval salivary-gland cells, where repeated DNA replication makes the chromosomes visibly…

• A. Acetabularia
• B. pea
• C. Macrospore
• D. Maize

Explanation: Brüchner’s classic experiments with the alga Acetabularia showed that the nucleus controls cell form and regeneration.

• A. Making possible reproduction in all types of environments
• B. Genetic drift occurs because of a small population in to offsprings
• C. They are recessive and carried by heterozygous individuals
• D. They have future survival value

Explanation: A harmful recessive mutation can remain in a population because heterozygous individuals carry it without showing the harmful phenotype.

• A. Lathers odorous
• B. Another Lamarckian
• C. Possum sativa
• D. Zeal Mays

Explanation: The first clear demonstration of linkage in plants was made by Bateson and Punnett in sweet pea, Lathyrus odoratus.

• A. Science concerned with improvement of heredity of human race
• B. Science concerned with improvement of heredity of animals
• C. Experimental alterations in the structure of the genes
• D. Genetics of eukaryotes

Explanation: Eugenics is the proposed science of improving the hereditary qualities of the human population through controlled reproduction.

• A. Backcross
• B. Test cross
• C. Hybridization
• D. Trihybrid

Explanation: A hybrid crossed with its recessive parent is specifically a test cross, because the recessive parent reveals the hybrid’s hidden alleles.

• A. Photocopy
• B. Prototype
• C. Apheliotropic
• D. Phenotype

Explanation: Phenotype means the observable appearance or traits of an organism, produced by its genotype interacting with the environment.

• A. Hybrid
• B. Heterosis
• C. Backcross
• D. None of the aboveAccess Government Careers

Explanation: The offspring produced by crossing genetically unlike parents is called a hybrid.

• A. All dominant genes will segregate together into daughter cells
• B. All homologous chromosome pairs will separate
• C. All daughter cells will have different homologous chromosome pairs
• D. All linkage group will be disruptedGet Language Courses

Explanation: During normal meiosis, homologous chromosomes separate at anaphase I, so every homologous pair is distributed between the daughter cells.

• A. Allopolyploidy
• B. Amphidiploids
• C. Autopolyploid
• D. Annapolis

Explanation: Autopolyploids have multiple chromosome sets originating from the same species.

• A. A mutant organism which has lost its ability to synthesize one or more essential nutrients
• B. A plan that is able to synthesize its own carbohydrates
• C. An organism that depends on other organism for meting its nutrient requirements
• D. non of theseOrder DNA Kits

Explanation: An auxotroph is a mutant that cannot synthesize one or more nutrients required for its growth and must obtain them from the medium or…

• A. AB, ab
• B. AB, Ab, aB, ab
• C. Ab, ab
• D. Data insufficient

Explanation: For AaBb with independent assortment, each gamete receives one allele from each gene pair, producing AB, Ab, aB, and ab.

• A. Law of limiting factors
• B. Law of segregation
• C. Law of dominance
• D. Law of inheritanceGet Language Courses

Explanation: When one allele expresses its trait and masks the expression of its contrasting allele in a heterozygote, the principle is Mendel’s law of…

• A. Halving of chromosome nuriber between two daughter cells
• B. Crossing over of the genes
• C. Formation of two daughter cells with identical DNA
• D. Segregation of maternal and paternal charactersAccess Government Careers

Explanation: Mitosis preserves genetic continuity by copying DNA and distributing an identical chromosome set into each of two daughter cells.

• A. Hybrid
• B. Mutant
• C. Variant
• D. Polyploidy

Explanation: A hybrid is the offspring produced by crossing two genetically different individuals, often differing in one or more traits.

• A. Presence of multiple alleles
• B. Linkage and crossing over
• C. Presence of lethal genes
• D. Sex-linkage

Explanation: The two parental combinations are far more frequent than the two new combinations, showing linkage with occasional crossing over.

• A. Autodiploid
• B. Hexaploid
• C. Amphidiploid
• D. Autopolyploid

Explanation: Doubling the chromosomes of an F1 hybrid restores pairing between chromosomes from the two parent species and produces an amphidiploid…