Kerala PSC HSST Botany 2012 Examination Higher Secondary School Teacher: Junior & Senior Question Paper Code 40/2012 (Cat. NO. 449/2010)
Original question paper of Kerala PSC HSST Botany Junior / Senior (Higher Secondary School Teacher Botany), Category No. 449/2010) examination conducted by Kerala PSC (Public Service Commission) on 13/04/2002 (Q. Code 40/2012) for the appointment of HSST Botany in Government Higher Secondary Schools of Kerala under the Directorate of Higher Secondary Education, Trivandrum, Govt. of Kerala. Questions are in MCQ (Multiple Choice Questions) format.
Part – 4 (Questions 76 – 100)
76. Fossil fuels are:
a. Renewable resources b. Non-renewable resource c. Inexhaustible resources d. Non-renewable and exhaustible resource
Ans. (d). Non-renewable and exhaustible resource
77. Parthenocarpy is induced by the hormone:
a. BAP b. GA c. IAA d. ABA
Question removed due to confusions in the options
Parthenocarpy: formation of fruit without fertilization. Parthenocarpic fruits are devoid of seeds, Eg. Banana
Gibberellin can induce the formation of seedless fruits but not through parthenocarpy but through stenospermocarpy
Stenospermocarpy: a biological phenomenon which induces seedless fruit formation in some fruits especially grapes. In stenospermocarpic fruits, normal pollination and fertilization is essential to ensure fruit formation. But during the course of fruit development spontaneous embryo abortion takes places and it leads to near seedless condition.
DNA samples from specimens of Littorina plena amplified using PCR with primers targeting a variable simple sequence repeat (SSR, a.k.a. microsatellite) locus, run on a 5% polyacrylamide gel, visualized by silver staining (source wikipedia)
Biotechnology Eligibility Test (BET) for DBT JRF Award (2012-13) Previous Year Question Papers with Answer Key, Explanations & References Government of India, Ministry of Science & Technology Department of Biotechnology, New Delhi
PART: A Set 2 (Questions 26 – 50)
26. Which one of the following is the natural host for pseudo-rabies virus?
a. Dog b. Man c. Swine d. Horse
Ans. (c). Swine
Pseudorabies (Aujeszky’s disease) is a viral disease of swine caused by Suid herpesvirus 1 (SuHV1) belongs to the family Herpesviridae. Other species such as sheep, cattle, and human are also susceptible to SuHV1. This disease is nothing to do with rabies virus. The notorious Rabies virus belongs to the family Rhabdoviridae which cause rabies in human and animals.
27. Which one of the following is the causative agent of fowl cholera?
a. V. cholera b. P. multocida c. E. coli d. S. pullorum
Ans. (b). P. multicida
Fowl cholera or avian cholera is caused by Pasteurella multocida. Fowl cholera is considered as Zoonoses
Zoonoses: an infectious disease of animals that can be transferred to human, Example: Rabies
S. pullorum is a poultry adapted species of Salmonella
28. The wavelengths of light that penetrate the least into the ocean are
a. Red and violet b. Red and yellow c. Blue and brown d. Green and blue
Ans. (b). Red and Yellow
Yellow, orange and red waves have the least energy in the visible spectrum, thus they cannot penetrated deep into the sea. This is the reason why most of the deep sea animals (fishes) are red in colour. In the deep sea, due to absence of enough light the red colour appears as black so that these animals can be escaped from their predators.