Skip to content

Given below are the list of… (Class 12 Biology 2023, Q10)

questionbuddy.in/q/cbse-12-biology-2023-57-5-1-q10-list-commercially-important-products-source

BiologyCBSE Class 12 · Board exam 2023, set 57/5/1 · 1 mark · MCQ

CBSE Class 12 Biology 2023: question 10

Set in the CBSE Class 12 board exam of 2023, paper 57/5/1, section A, question 10, for 1 mark. Try it first; the hints and our step-by-step solution are below.

Q10 · 1 mark · MCQMicrobes in Human Welfare

Given below are the list of the commercially important products and their source organisms. Select the option that gives the correct matches.

S. No.Bioactive ProductsS. No.Microbes (Source Organism)
(A)Cyclosporin A(i)Streptococcus
(B)Statins(ii)Tricoderma polysporum
(C)Streptokinase(iii)Penicillium notatum
(D)Penicillin(iv)Monascus purpureus
  1. (A)(A)-(i), (B)-(ii), (C)-(iii), (D)-(iv)
  2. (B)(A)-(iii), (B)-(iv), (C)-(ii), (D)-(i)
  3. (C)(A)-(iv), (B)-(iii), (C)-(ii), (D)-(i)
  4. (D)(A)-(ii), (B)-(iv), (C)-(i), (D)-(iii)

Source: official question paper from cbse.gov.in (PDF). See it in the full 2023 board paper, set 57/5/1.

Hints

Open one hint at a time and try again before the next.

Hint 1

Streptokinase and penicillin are named after their source organisms.

Hint 2

Statins come from a yeast.

Step-by-step solution

Each step shows the marks it earns, as an examiner would award them. Checked by an independent re-solve from the question paper.

  1. Cyclosporin A comes from Trichoderma polysporum, so (A)–(ii). Statins come from the yeast Monascus purpureus, so (B)–(iv).

    ½ mark

  2. Streptokinase comes from Streptococcus, so (C)–(i). Penicillin comes from Penicillium notatum, so (D)–(iii). Hence option (D).

    ½ mark

Answer: (D)

Where the marks are

  • Correct matching, option (D) (1 mark)

Revise the chapter

Practise this chapterBoard-style questions from Microbes in Human Welfare, one at a time, marked against the answer key and marking points.Back to the full paper2023 board paper, set 57/5/1: every question, by section.

The question is transcribed from the official paper; figures are described in words. The solution, hints and chapter tag are ours. Spotted an error? Write tosupport@questionbuddy.in.