Genetics And Plant Breeding - Study Mode

[#636] Match the following: Column A Column B a. Vigna mungo 1. Blackgram b. Vigna unguiculata 2. Cow pea c. Cajanus cajan 3. Redgram d. Cicer arietinum 4. Bengalgram
Correct Answer

(B) a-1, b-2, c-3, d-4

Explanation

Solution: a. Vigna mungo , is the black gram. It is one of the important pulses grown in both the Kharif and Rabi seasons. This crop is extensively grown in the southern part of India, the northern part of Bangladesh and Nepal. b. Vigna unguiculata is cow pea. It is an annual herbaceous legume from the genus Vigna. Its tolerance for sandy soil and low rainfall has made it an important crop in semiarid regions across Africa and Asia. c. Cajanus cajan is commonly known as red gram or pigeon pea. It is widely cultivated in tropical and semitropical regions around the world. It contains high levels of protein and the important amino acids methionine, lysine and tryptophan. d. Cicer arietinum is the scientific name of Bengal gram. Chickpea seeds are high in protein. It is one of the earliest cultivated legumes, and 9500-year-old remains have been found in the Middle East.

[#637] The seed certification agency certifies the
Correct Answer

(B) Foundation seeds

Explanation

Solution: The seed certification agency certifies the Foundation seeds. The purpose of seed certification is to maintain and make available to the public, through certification, high-quality seeds and propagating materials of notified kind and varieties so grown and distributed as to ensure genetic identity and genetic purity. Foundation seed, also known as a basic seed, is the descendent of breeder seed and is produced under conditions that ensure maintaining genetic purity and identity. A white colour certificate is issued for foundation seeds by seed certification agencies.

[#638] Which of the following are the inhibitors to cell wall synthesis
Correct Answer

(D) All of the above

Explanation

Solution: The following are the inhibitors to cell wall synthesis: A. Penicillin- Penicillins have been shown to inhibit bacterial cell wall synthesis, and interact with penicillin-binding proteins, leading to bacterial lysis. B. Oxamycin and Ristocatin- like most antibiotics these two also affect the synthesis of the cell wall. C. Vancomycin- Vancomycin is a glycopeptide antibiotic used for the treatment of serious infections by Gram-positive pathogens. Vancomycin inhibits cell wall biosynthesis by targeting the d-Ala-d-Ala terminus of peptidoglycan (PG).

[#639] The study of frequencies of mating population is known as
Correct Answer

(A) Population genetics

Explanation

Solution: The study of frequencies of the mating population is known as Population genetics. Population genetics is the study of genetic variation within and among populations and the evolutionary factors that explain this variation. Its foundation is the Hardy - Weinberg law, which is maintained as long as the population size is large, mating is at random, and mutation, selection and migration are negligible.

[#640] The direct and the immediate visible effect of pollen grains on the seed coat colour during the formation of seeds is termed as
Correct Answer

(A) Xenia

Explanation

Solution: The direct and immediate visible effect of pollen grains on the seed coat colour during the formation of seeds is termed, Xenia. Xenia is the effect of genes from the male parent on the development of fruit or seeds. It is used to identify the best pollenizer parents to decrease fruit development period and increase yield in mixed cultivar plantings.