New ! Biology MCQ Practise Tests

12th Standard Biology English Medium Economically useful Plants Reduced Syllabus Important Questions 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. Tamarindus indica is indigenous to

    (a)

    Tropical African region

    (b)

    South India, Sri Lanka

    (c)

    South America, Greece

    (d)

    India alone

  3. New world species of cotton

    (a)

    Gossipium arboretum

    (b)

    G.herbaceum

    (c)

    Both a and b

    (d)

    G.barbadense

  4. 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

  5. The only cereal that has originated and domesticated from the New world.

    (a)

    Oryza sativa

    (b)

    Triticum asetumn

    (c)

    Triticum duram

    (d)

    Zea mays

  6. 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

  7. 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

  8. Identify the tamil name for flaked rice

    (a)

      Nel

    (b)

    Aval  

    (c)

    Pori

    (d)

    Umi

  9. Pigeon pea is the common name for _______

    (a)

     Vigna radiata  

    (b)

    Vigna mungo

    (c)

     Cajanus cajan  

    (d)

    Sorghum vulgare

  10. Statement 1: Andrographis paniculata is known as King of Bitters.
    Statement 2: The decoction of Andrographis is used against Diabetes mellitus.

    (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

  11. 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

  12. Assertion (A): Turmeric is used to treat cancer.
    Reason (R): Curcumin is biomolecule present in turmeric.

    (a)

    A is right R is wrong

    (b)

    Both A and R are wrong

    (c)

    A is wrong R is right

    (d)

    A and R are right. R explains A.

  13. The plant source of Marijuana is ________

    (a)

    Andrograph is paniculata

    (b)

    Phyllanthus maderspatensis

    (c)

    Cannabis sativa

    (d)

    Papaver somniferum

  14. 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

  15. Identify the mismatched pair:

    (a)

    Holy basil - Ocimum sanctum

    (b)

    Indian gooseberry - Phyllanthus amarus

    (c)

    Vilvam - Aegle marmelos

    (d)

    Veldt grape - Cissus quadrangularis

  16. 2 Marks

    10 x 2 = 20
  17. Write the cosmetic uses of Aloe.

  18. Discuss which wood is better for making furniture.

  19. A person got irritation while applying chemical dye. What would be your suggestion for alternative?

  20. Give definitions for organic farming?

  21. Which is called as the “King of Bitters”? Mention their medicinal importance.

  22. Name any four millet varieties.

  23. Point out the uses of sugarcane.

  24. How coffee plants are introduced to India

  25. Mention any two Jute species.

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

  27. 3 Marks

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

  29. Write the origin and area of cultivation of green gram and red gram.

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

  31. Enumerate the uses of turmeric

  32. Write the uses of nuts you have studied.

  33. Write a short note on foxtail millet.

  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 of active principle and medicinal values of any two plants you have studied.

  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. How will you prepare an organic pesticide for your home garden with the vegetables available from your kitchen?

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

  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 2021

Write your Comment