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Biotechnolgy and microbes in human welfare Quiz-1

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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. Which is produced during anaerobic fermentation of agricultural wastes?
  •  Methane
  •  CO2
  •  Carbon monoxide
  •  Biogas
Solution
d) Biogas or gobar gas is produced during anaerobic fermentation of agricultural wastes. Biogas is used as fuel for heating and cooking, lighting power for irrigation and other purposes as an alternative of fire wood, kerosene, dung cakes or even electricity and LPG. It is considered as ecofriendly and pollution free source of energy

Q2.Which one of the following pesticides is banned now-a-days?
  •  DDT
  •  Eldrin
  •  Aldrin
  •  Toxaphene
Solution
a) DDT is an organochlorine. Now-a-days DDT is banned because it has an affinity for fatty tissues of animals, which lead to biomagnification. Besides, with the repeated use of such pesticides, a kind of accelerated evolution occurs to produce resistant population of pests.

Q3.  Pencils are prepared from the wood of
  •  Pinus vinaster
  •  Juniperus virginiana
  •  Chamaecyparis piscifera
  •  Abies pindrow
Solution
a) Juniperus virginiana wood is used for making pencils

Q4. Isinglass is a product obtained from air bladder of
  •  Some snakes
  •  Some fishes
  •  Some aves
  •  None of these
Solution
No solution avaialable
Q5.Which role is played by Lactobacillus in our stomach?
  •  Harmful
  •   Neutral
  •  Beneficial
  •  Sometimes (a) and sometimes (b)
Solution
(c) Lactobacillus bacteria inhibit the growth of hostile or illness causing bacteria inside the intestinal tract and promote beneficial bacteria needed for digestion

Q6. Leaves of which plant can sharpen the memory?
  •  Asparagus
  •  Adhatoda
  •  Aloe vera
  •  Ocimum
Solution
(d) Leaves of Ocimum (tulsi) can sharpen the memory and are also used as nerve tonic.

Q7.Which of the following is an endogenic species of earthworm?
  • Octochaetonae serrata
  •  Lampito mauritti
  •  Lumbricus teretris
  •  All of the above
Solution
a) Endogenic species live in deep soil up to 10-30 cm and feed on humic matters and mineral matters, e.g., Octohaetonal serrata. Lampito mauriti is epigenic variety.

Q8.International Rice Research Institute (IRRI) is located at
  • Hyderabad (India)
  •  Manila (Philippines)
  •  New York (USA)
  •  Tokyo (Japan)
Solution
b) International Rice Research Institute is situated at Manila (Philippines) and Indian Rice Research institute is situated at Cuttack.

Q9.Primary treatment is the
  •  Physical removal of large and small particles from sewage
  •  Biological removal of large and small particles from sewage
  •  Both (a) and (b)
  •  Chemical removal of large and small particles from sewage
Solution
(a)Primary treatment is the physical removal of large and small particles from sewage

Q10.  Consider the following statements about methanogens bacteria
I. Methanogen bacteria are commonly found in the anaerobic sludge formed during sewage treatment
II. These bacteria are also occur in rumen of the cattle where they act upon cellulosic material to breakdown cellulose
III. They play a very important role in the nutrition of cattle by digesting cellulosic material
Which of the statement given above are correct?

  •  I, II and III
  •  I and II
  •  I and III
  •  II and III
Solution
a) Methanogens, particularly Methanobacterium, anaerobically breakdown cellulosic material to produce CO2 and H2 in anaerobic sludge in sewage treatment plants and rumen of cattle, thus providing nutrition to cattle

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Biotechnolgy and microbes in human welfare Quiz-1
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