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Biotechnolgy and microbes in human welfare Quiz-14

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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions. About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus. Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced. .

Q1.  Chicory powder, which is mixed with coffee powder is obtained from
  •   Root
  •   Leaf
  •   Stem
  •   Seeds
Solution
Chicory is the chief substitute of coffee, which is obtained from the roots of Cichorium intybus, which is a member of family-Asteraceae. The dried roots of this plant are roasted, pulverised and mixed with coffee powder.

Q2.  Ethanol is commercially produced through a particular species of
  •   Clostridium
  •   Trichoderma
  •   Aspergillus
  •   Saccharomyces
Solution
Yeast (Saccharomyces cerevisiae) is used for commercial production of ethanol.

Q3.  Which one of the following is the American poultry breed?
  •   Australop
  •   Minorica
  •   Assel
  •   Rhod Island Red
Solution
Plymoth rock, Wyandotte, new Hampshire, Rhod Island Red are some of the American breeds of poultry, Aurtralop and Sussex are British breeds, white leghorn and Minorica are Mediterranean breeds and Assel is a desi or indigenous breed.

Q4.  Rice bran oil is used as an
  •   Antibiotic
  •   Anti-corrosive
  •   Anti-helminthic
  •   Insecticide
Solution


Q5. The primary treatment of waste water involves the removal of
  •   Dissolved impurities
  •   Stable and particles
  •   Toxic substances
  •   Harmful bacteria
Solution
  Primary treatment of sewage is the process of removal of small and large, floating and suspended solid from sewage through filtration and sedimentation

Q6.  Consider the following statements about organic farming I. Organic farming promotes the use of crop rotations and cover crops and encourages balanced host/predator relationships II. Integrated pest and weed management and soil conservation systems are valuable tools on an organic farm II. Organic farming protects the environment, minimize soil degradation and erosion and decrease pollution Which of the statements given above are correct?
  •   I, II and III
  •   I and II
  • I and III
  •   II and III
Solution
Advantage of using organic farming are, it promotes the use of crop rotation and cover crops, encourages balanced host/predator relationships, helps in soil conservation, minimize soil degradation and erosion and decrease pollution. Integrated pest and weed management and soil conservation systems are valuable tools on an organic farm

Q7. Select the correct statement from the once given below
  •   Barbiturates when given to criminals make them tell the truth
  •   Morphine is often given to persons, who have undergone surgery as a pain killer
  •   Chewing tobacco lowers blood pressure and heart rate
  •   Cocaine is given to patients after surgery as it stimulates recovery
Solution
In clinical settings, morphine exerts its principal pharmacological effect on the central nervous system and gastrointestinal tract. Its primary actions of therapeutic value are analgesic and sedation.

Q8. Which gas is released during the process of fermentation that gives the puffy appearance to dough for making bread
  •   CO2
  •   CO
  •   O2
  •   H2
Solution
CO2 gas is released during the process of fermentation gives the puffy appearance to dough

Q9. Green potatoes are toxic due to
  •   Phytoalexins
  •   Solanin
  •   Triazine
  •   Hormones
Solution
Due to presence of solanin, green potatoes are toxic.

Q10.  Which one of the following is not a biofertilizer?
  •   Rhizobium
  •   Nostoc
  •   Mycorrhiza
  •   Agrobacterium
Solution
Agrobacterium is a Gram negative bacterium that casuse tumours in plants. It is well known for its ability to transfer DNA between itself and plants, and for this reason it has become an important tool for genetic engineering. A. tumefaciens causes crown-gall disease in plants. It has Ti-plasmid.

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