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Biotechnolgy and microbes in human welfare Quiz-3

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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..
are very important in achieving your success in CLAT, DULLB and Other Law Exams..

Q1. Cork is obtained from
  •  Quercus suber
  •  Pinus roxburghii
  •  Cedrus deodara
  •  Mangifera indica
Solution
(a) Cork is obtained from Quercus suber.

Q2.Which one of the following genus forms symbiotic association with plants and helps them in their nutrition?
  •  Glomus
  •  Trichoderma
  •  Azotobacter
  •  Aspergillus
Solution
a) Glomus is a genus of Arbuscular Mycorrhizal (AM) fungi and all species form symbiotic relationships (mycorrhizae) with plant roots. Roots infected with Glomus may protect the host plant from harmful soil borne pathogens, provided limiting nutrients, and increase overall fitness of the host. The Glomus plant symbiosis plays an important role in the economic sectors involving the growth of plants such as agriculture, horticulture and forestry

Q3.  Most nutritious among the following is
  •  Wheat
  •  Maize
  •  Bajra
  •  Rice
Solution
(c) Bajra is the most nutritious cereal it has more proteins than other cereals.

Q4. Which one of the following is a petroleum plant?
  •  Euphorbia
  •   Potato
  •   Sugarcane
  •  Maize
Solution
(a)Those plants whose latex contains long chain of hydrocarbons are called petroplants, e.g., Euphorbia lathyris, Euphorbia caudicifolia, Calotropis procera, Pittosporum resiniferum, etc.

Q5.Disadvantages of chemical agents are
I. chemicals are toxic and harmful to human beings and animals
II. chemical pollute the environment and plants
III. weedicides used to remove weeds also pollute the soil
Choose the correct option
  •   I, II and III
  •   I and II
  •  I and III
  •  II and III
Solution
a) Commercial chemical fertilisers are more expensive than natural fertilisers. They may contain ingredients that may be toxic to the skin or respiratory system. Chemical fertilisers help increase the productivity of many garden plants and keep desirable plants healthy. But their use is also a major cause of many forms of pollution. Chemical fertilisers can build up in the soil, causing long-term imbalances in soil pH and fertility

Q6. Integrated Pest Management (IPM) discourages the excessive use of
  •  Biological pesticides
  •  Chemical pesticides
  •  Mechanical technology
  •  All of these
Solution
b) Integrated Pest Management (IPM) discourages the excessive use of chemical pesticides. IPM involves use of different pest control methods, better agricultural practice like crop rotation, sanitation, etc.

Q7.Rotenone is a
  • Bioherbicide
  •  Commonly used biofertilizer
  •  Bioinsecticide
  •  Juvenile hormone
Solution
c) Rotenone is a bioinsecticide obtained from the roots of Derris elliptica and Lonchocarpurs.

Q8.Rauwolffia serpentina is used in
  • Curing high blood pressure
  •  Kidney failure
  •  Eye defect
  •   Diabetes
Solution
a) The alkaloid reserpine is obtained from the bark of root of Rauwolffia serpentine. It reduces the high blood pressure and mental hypertension. Rauwolffia was the first medicinal plant to be reported to cure a disease.

Q9.Roquefort cheese is formed by ripening with the fungi
  •  Propionibacterium sharmanii
  •  Penicillium roqueforti
  •  Propionibacterium roqueforti
  •  Penicillium sharmanii
Solution
b) Roquefort cheese is formed by ripening with the fungi Penicillium roqueforti for a particular flavor

Q10.  The pesticide most persistent in the soil is
  •  DDT
  •  BHC
  •  Dieldrin
  •  Baygon
Solution
c) Dieldrin is an example of organochlorines and most persistent in soil. Most importantly dieldrin is five times more toxic than DDT.

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Biotechnolgy and microbes in human welfare Quiz-3
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