R.K. Sharma Test 21 — Agri Master Mind
Which cell organelle is often called the "suicide bag" of the cell?
- Golgi apparatus
- Lysosome
- Vacuole
- Centriole
The nucleus was discovered in the year _______ by Robert Brown.
- 1831
- 1833
- 1835
- 1836
Who discovered lampbrush chromosomes during mitosis?
- C.F. Nasse
- E. Strasburger
- W. Flemming
- A. Schneider
Statement 1: The terms "transition" and "transversion" were introduced by E. Freese. Statement 2: The term "nucleic acid" was introduced by Altman.
- Statement 1 is correct and statement 2 is incorrect
- Both are correct statements
- Both are incorrect statements
- Statement 1 is incorrect & statement 2 is correct
Spherosomes are found only in _______ cells.
- Animal
- Plant
- Both A & B
- None
Tirak is a disorder found in the _______ crop.
- Marigold
- Tobacco
- Lucerne
- Cotton
Pairing of homologous chromosomes takes place during the _______ stage of meiosis.
- Leptotene
- Zygotene
- Diplotene
- Pachytene
Golgi bodies arise from the _______ endoplasmic reticulum.
- Rough
- Smooth
- Both A & B
- None
The mass selection breeding method is based on ______ screening.
- Phenotype
- Genotype
- Both A & B
- None
Which scientist(s) isolated DNA ligase?
- B. Muller-Hill & W. Gilbert
- J.D. Watson & F.H.C. Crick
- F. Jacob & J. Monod
- B. Weiss & C.C. Richardson
Statement 1: The term "endoplasmic reticulum" was introduced by Porter in 1948. Statement 2: The endoplasmic reticulum provides a passage for DNA from the nucleus to the cytoplasm.
- Both are incorrect statements
- Both are correct statements
- Statement 1 is correct and statement 2 is incorrect
- Statement 1 is incorrect & statement 2 is incorrect
Chromosomes were discovered by ______.
- Robert Hooke
- Purkinje
- Waldeyer
- Strasburger
Who developed the chi-square test?
- Galton
- Rimpau
- Morgan
- Pearson
The contribution of Wilson and Stevens to genetics is the discovery of ______.
- X chromosome
- Y chromosome
- B chromosome
- Both A & B
Coconut is a ______ plant.
- Dioecious
- Monoecious
- Both A & B
- None
Which paper was published by Mendel outlining his laws of inheritance?
- Experiments in Plant Reproduction
- Experiments in Plant Genetics
- Experiments in Plant Hybridization
- Experiments in Plant Linkage
The phenotypic ratio of a trihybrid cross is ______.
- 27:9:9:3:3:3:1
- 27:9:9:9:3:3:3:1
- 27:9:9:9:3:3:1
- 27:9:9:9:3:3:3:3:1
The term "histone" was coined by ______.
- S. Benzer
- C. Benda
- A. Kossel
- E. Heitz
Onion, cucurbits, and sunflower 🌻 show ______ inbreeding depression.
- No
- High
- Moderate
- Low
Which of the following does NOT belong to the cleistogamy category?
- Rice
- Wheat
- Barley
- All of the above
Which of the following is NOT a chemical mutagen?
- Methyl methane sulfonate
- Ethyl methane sulfonate
- Sodium methyl arsenate
- All of the above are chemical mutagens
In the pedigree method of breeding, individual plants are selected from the ______ generation.
- F1
- F2
- F3
- F4
Isogenic lines are those that ______ for a single locus.
- Are the same
- Differ
- Both A & B
- All of the above
The "one gene-one polypeptide" hypothesis was proposed by ______.
- W. Sutton
- M. Kimura
- V.M. Ingram
- Beadle & Tatum
Statement 1: The term "B chromosome" was given by F. d'Herelle. Statement 2: The term "eukaryote" was given by W. Kuhne.
- Both statements are correct
- Both statements are incorrect
- Statement 1 is incorrect & statement 2 is incorrect
- Statement 1 is correct and statement 2 is incorrect
Which statement is wrong about breeder seed?
- Golden yellow tag denotes breeder seed
- These seeds are 100% pure
- Very little in quantity and often cheap
- All are correct statements
The ability of seed to emerge in varying environments of fields?
- Seed viability
- Seed vigour
- Seed germination
- Seed quality
The Seed Act came in the year _____?
- 1966
- 1968
- 1970
- 1972
The first private seed company was established in India in which place?
- Mumbai
- Kolkata
- Chennai
- Annamalai
The rolled towel method is not suitable for which crop germination test?
- Gram
- Mustard
- Tomato
- Wheat