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Question : How is sterilization of tissue culture medium done?
A. Autoclaving of a medium at 120°C for 15 minutes
B. Filtering the medium through a fine sieve
C. Mixing the medium with antifungal agents
D. Keeping the medium at –20°C
Question : What chemical induces polyploidy in plant cells?
A. 2, 4-dichloro phenoxy acetic acid
B. Rifampicin
C. Cytokine
D. Colchicine
Question : Birds like chicken that are grown for meat only are known as?
A. Hybrid
B. Broiler
C. Bird management
D. Bird culture
Question : Chemically, silk is?
A. Cellulose
B. Resin
C. Protein
D. Lipid
Question : Before placing an explant in culture, it must be disinfected. How is this done?
A. autoclaving
B. ultra-violet rays
C. Clorox or hypochlorite
D. X-rays
Question : How are introductions used?
A. a direct variety
B. a variety after selection
C. a parent of hybrid
D. All of these
Question : Where does 33% of India’s Gross Domestic Product come from?
A. Industry
B. Agriculture
C. Export
D. Small-scale cottage industries
Question : A transgenic improved variety of basmati rice
A. does not require chemical fertilizers and growth hormones
B. gives high yield and is rich in vitamin A
C. is completely resistant to all insect pests and diseases of paddy
D. gives high yield but has no characteristic aroma
Question : Pruning of plants promotes branching because the axillary buds become sensitized to what?
A. ethylene
B. gibberellin
C. cytokinin
D. indole acetic acid
Question : What are worker bees?
A. Fertile males
B. Fertile females
C. Sterile females
D. Sterile males
Question : Which is the most likely reason for the development of resistance against pesticides in insects damaging crops?
A. random mutations
B. genetic recombination
C. directed mutations
D. acquired heritable changes
Question : What varieties are Sonalika and Kalyan Sona?
A. wheat
B. rice
C. millet
D. tobacco
Question : Which of these is not used as a biopesticide?
A. Trichoderma harzianum
B. Nuclear Polyhedrosis Virus (NPV)
C. Xanthomonas campestris
D. Bacillus thuringiensis
Question : Which of the following statements about honey bees is correct?
A. Apis indica is the largest wild honey bee in India
B. Honey is predominantly sucrose and arabinose
C. Beewax is a waste product of honey bees
D. Communication in honey bees was discovered by Karl Von Frisch
Question : Recently, which of the following methods has been used to increase the productivity of super milk cows?
A. Artificial insemination by a pedigreed bull only
B. Superovulation of a high production cow only
C. Embryo transplantation only
D. A combination of superovulation, artificial insemination and embryo transplantation into a ‘carrier cow’ (surrogate mother)