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 69 of 116
- A. Bagging
- B. Inter over crossing
- C. Intraspecific crossing
- D. Inosculation
Explanation: Bagging and crossing are used to control or perform hybridization, including crosses within a species.
Correct answer: Inosculation- A. The gene pool is maintained
- B. Improvement of crop can take place
- C. Microbes act as biological factories
- D. Genetic error can be rectifiedOrder DNA Kits
Explanation: Genetic engineering can use microbes as production systems, improve crops and correct or introduce specific genetic traits.
Correct answer: The gene pool is maintained- A. Diploid number of chromosomes
- B. Tetraploid number of chromosomes
- C. Haploid number of chromosomes
- D. None of the above
Explanation: The number of linkage groups normally corresponds to the haploid chromosome number because each group represents chromosomes linked…
Correct answer: Haploid number of chromosomes- A. Albinism is dominant over green characters
- B. Green plastids of male parent become nitrated
- C. Crossing over results in structural changes in green plastids
- D. Plastids are inherited through maternal parents
Explanation: Maize plastids are transmitted mainly through the female parent, so the albino female determines the plastid phenotype of the progeny.
Correct answer: Plastids are inherited through maternal parents1365. One of the persons whose evolutionary ideas were close to that of Laraarcd was____________________?
- A. Lysendo
- B. Vavilow
- C. Weismann
- D. H be vnes
Explanation: Trofim Lysenko promoted ideas resembling Lamarckian inheritance, particularly the influence of environment and acquired characteristics.
Correct answer: Lysendo- A. Mendel
- B. Huge and Vnes
- C. Darwin
- D. Lamak
Explanation: Hugo de Vries proposed the mutation theory, which explained evolution through large, sudden and discontinuous variations.
Correct answer: Huge and Vnes- A. None of the above
- B. There are more plants than animals
- C. Plants are similar in structure
- D. Plants can manufacture their own food material
Explanation: The question reflects the older textbook view that early plant-like organisms were regarded as autotrophic because plants can manufacture…
Correct answer: Plants can manufacture their own food material- A. Breeding with the wild variety
- B. Heat treatment
- C. Colchicines treatment
- D. Hormone spray
Explanation: Breeding cultivated plants with resistant wild relatives can introduce genes for disease resistance, after which selection fixes the…
Correct answer: Breeding with the wild variety1369. An individual with two identical members of a part of geneue factors is called__________________?
- A. Hybrid
- B. Homozygous
- C. Heterozygous
- D. Dominant
Explanation: An individual carrying two identical alleles for a gene is homozygous, such as BB or bb.
Correct answer: Homozygous- A. 10
- B. 20
- C. 40
- D. 15
Explanation: Each chromosome pair represents one linkage group, so the number of linkage groups generally equals the haploid chromosome number.
Correct answer: 10- A. Chromosomal mutation
- B. Gene mutation
- C. Monoploldy
- D. Synapsis
Explanation: A chromosomal mutation involves structural changes such as transfer, deletion, duplication or inversion of chromosome segments containing…
Correct answer: Chromosomal mutation- A. Gene map
- B. Ideogram
- C. Karyotype
- D. Phenotype
Explanation: An idiogram is a diagram showing chromosomes arranged according to their relative size and other features.
Correct answer: Ideogram- A. 0/1
- B. Half
- C. 1/1
- D. 1/4
Explanation: If the plant produces only BM and bm gametes in equal proportions, the bm gamete has a one-half chance of meeting a BM gamete and a…
Correct answer: Half- A. Any two chromosomes with one each
- B. Two non homologous chromosomes
- C. Two homologous chromosomes
- D. Same chromosomesHire Grant Writers
Explanation: Alleles occupy the same locus on a pair of homologous chromosomes, with one allele inherited from each parent.
Correct answer: Two homologous chromosomes- A. All the above
- B. Overdominance
- C. Epistasis
- D. Dominance
Explanation: Heterosis can arise through dominance, overdominance, and favorable epistatic interactions among genes.
Correct answer: All the above- A. Nelson (1973)
- B. Flor (1956)
- C. Robinson (1971)
- D. Vander plank (1963)
Explanation: The gene-for-gene hypothesis was proposed by H. H. Flor in 1956 while studying flax and flax rust resistance.
Correct answer: Flor (1956)- A. Cenified seed
- B. Foundation
- C. Nucleus seed
- D. Registered seed
Explanation: Breeder seed is produced by the breeder from nucleus seed, which is the genetically purest and most carefully maintained seed class.
Correct answer: Nucleus seed- A. Stout (1917)
- B. Gerstel (1900)
- C. Brewbaker (1810)
- D. Koelreuter (1763)
Explanation: Joseph Gottlieb Kölreuter reported male sterility in flowering plants in 1763.
Correct answer: Koelreuter (1763)- A. Plasmalema
- B. Plasmedesmata
- C. Trachieds
- D. Nessels
Explanation: Plasmodesmata are microscopic cytoplasmic channels crossing plant cell walls and allowing neighboring cells to exchange substances and…
Correct answer: Plasmedesmata- A. Watson and Crick (1953)
- B. Crick (1966)
- C. Jacob and monod (1965)
- D. Briuen and Davidson (1959)Search Public Records
Explanation: François Jacob and Jacques Monod discovered the operon model of gene regulation and received the 1965 Nobel Prize in Physiology or…
Correct answer: Jacob and monod (1965)