New ! Biology MCQ Practise Tests

12th Standard Biology English Medium Economically useful Plants Reduced Syllabus Important Questions With Answer Key 2021

12th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Biology

Time : 01:00:00 Hrs
Total Marks : 100

    Multiple Choice Questions

    15 x 1 = 15
  1. Consider the following statements and choose the right option.
    i) Cereals are members of grass family.
    ii) Most of the food grains come from monocotyledon.

    (a)

    (i) is correct and (ii) is wrong

    (b)

    Both (i) and (ii) are correct

    (c)

    (i) is wrong and (ii) is correct

    (d)

    Both (i) and (ii) are wrong

  2. Tectona grandis is coming under family

    (a)

    Lamiaceae

    (b)

    Fabaceae

    (c)

    Dipterocaipaceae

    (d)

    Ebenaceae

  3. New world species of cotton

    (a)

    Gossipium arboretum

    (b)

    G.herbaceum

    (c)

    Both a and b

    (d)

    G.barbadense

  4. Assertion: Turmeric fights various kinds of cancer
    Reason: Curcumin is an anti-oxidant present in turmeric

    (a)

    Assertion is correct, Reason is wrong

    (b)

    Assertion is wrong, Reason is correct

    (c)

    Both are correct

    (d)

    Both are wrong

  5. Find out the correctly matched pair.

    (a)

    Rubber-Shorea robusta

    (b)

    Dye-Lawsonia inermis

    (c)

    Timber-Cyperus papyrus

    (d)

    Pulp-Hevea brasiliensis

  6. Observe the following statements and pick out the right option from the following:
    Statement I – Perfumes are manufactured from essential oils.
    Statement II – Essential oils are formed at different parts of the plants.

    (a)

    Statement I is correct

    (b)

    Statement II is correct

    (c)

    Both statements are correct

    (d)

    Both statements are wrong

  7. Observe the following statements and pick out the right option from the following:
    Statement I: The drug sources of Siddha include plants, animal parts, ores and minerals.
    Statement II: Minerals are used for preparing drugs with long shelf-life.

    (a)

    Statement I is correct

    (b)

    Statement II is correct

    (c)

    Both statements are correct

    (d)

    Both statements are wrong

  8. The active principle trans-tetra hydro canabial is present in

    (a)

    Opium

    (b)

    Curcuma

    (c)

    Marijuana 

    (d)

    Andrographis

  9. Paddy, Wheat and Sorghum, etc., comes under the category of cereals. All the members ofcereals belong to which of the following family?

    (a)

     Fabaceae

    (b)

     Poaceae

    (c)

     Leguminoneae

    (d)

    Caesalpinaeceae

  10. Match the common names of the given plant species with their respective binomial

    (A) Paddy (I) Vigna radiata
    (B) Lady's finger  (II) Titicum aestivum
    (C) Wheat  (III) Oryza sativa
    (D) Green gram (IV) Abelmoschus esculentus
    (a)

    A-iii, B-iv, C-ii and D-i 

    (b)

    A-ii, B-iii, C-i and D-iv

    (c)

    A - i, B - iii, C - iv and D - ii

    (d)

     A - i, B - ii, C - iv and D - iii

  11. Given below are the plant species and their parts used. Which is the incorrect pair(s)?
    (i) Cajanus cajan : Seeds
    (ii) Anacardium occidentale: nuts
    (iii)Borassusflabellifer: Endosperm
    (iv) Capsicum annum: leaves

    (a)

     i and ii  

    (b)

     ii and iii

    (c)

    iii only

    (d)

     iv only

  12. Statement 1: Chinese discovered the paper.
    Statement 2: Eucalyptus and Casuarina are the widely used tree species for making paper pulp.

    (a)

    Statement 1 is correct and Statement 2 is also correct

    (b)

    Statement 1 is correct and Statement 2 is incorrect

    (c)

    Statement 1 is incorrect and Statement 2 is correct

    (d)

    Both the Statements are incorrect

  13. Statement 1: Aloe vera belongs to the family Asphodelaceae.
    Statement 2: Jasminum grandiflorum belongs to the family of Oleaceae.

    (a)

    Statement 1 is correct and Statement 2 is also correct

    (b)

    Statement 1 is correct and Statement 2 is incorrect

    (c)

    Statement 1 is incorrect and Statement 2 is correct

    (d)

    Both the Statements are incorrect

  14. Select the new world species of cotton.
    (i) Gossypium hirsutum
    ii) Gossypium barbadense
    (iii) Gossypium arboreum
    (iv) Gossypium herbacecum

    (a)

    i and ii only

    (b)

    i and iii only

    (c)

    iii and iv only

    (d)

     ii and iv only

  15. Identify the incorrect statements:
    (a) Morphine is used as potent hepatoprotective.
    (b) Phyllanthin is used as a strong analgesic in surgery.
    (c) Indian Acalypha is used to cure skin diseases.
    (d) Cissus quadrangularis is widely used for treating bone fractures.

    (a)

    a and c

    (b)

    a and d

    (c)

    b and c

    (d)

    a and b

  16. 2 Marks

    10 x 2 = 20
  17. What is pseudo cereal? Give an example.

  18. Discuss which wood is better for making furniture.

  19. Name the humors that are responsible for the health of human beings.

  20. Give the binomials of paddy and wheat.

  21. Write the health benefits of Kodo millet.

  22. Name the family does the cereals and pulses belong to.

  23. Why do we take vegetables in our diet?

  24. Mention any two Jute species.

  25. Name the plant species used for making paper pulp.

  26. What does NCB stands for? Mention its role.

  27. 3 Marks

    10 x 3 = 30
  28. Differentiate bio-medicines and botanical medicines.

  29. What are millets? What are its types? Give example for each type.

  30. Enumerate the uses of turmeric

  31. What is TSM? How does it classified and what does it focuses on?

  32. Write the uses of nuts you have studied.

  33. Write the botanical name and culinary uses of green gram.

  34. Write a note on origin and area of cultivation of cotton.

  35. What are organic pesticides?

  36. Mention the plant species or their products which are popularly known as
    (a) Queen of species
    (b) Black Gold of India and
    (c) King of bitters.

  37. Complete the statements.
    (a) Alphonsa is a variety of_________
    (b) Cayenne pepper is a variety of __________

  38. 5 Marks

    7 x 5 = 35
  39. Give an account on the role of Jasminum in perfuming.

  40. Write the economic importance of rice.

  41. What are psychoactive drugs? Add a note Marijuana and Opium

  42. What are the King and Queen of spices? Explain about them and their uses.

  43. Write the botanical name, origin, cultivational area and uses of Black gram.
    Botanical name : Vigna mungo

  44. Give a detailed account on anyone fibe yielding plant.

  45. Explain the stepwise preparation of Bio-pest repellent from the leaves of Azadirachta indica

*****************************************

TN 12th Standard Biology free Online practice tests

Reviews & Comments about 12th Standard Bio-Botany English Medium Economically useful Plants Reduced Syllabus Important Questions With Answer Key 2021

Write your Comment