Download App

STD 12 - 9. biotechnology principlas and process — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 9. biotechnology principlas and process1 Mark
MCQ
Assertion: Plasmids are single-stranded extra chromosomal $DNA$.

Reason: Plasmids are usually present in eukaryotic cells.

  • A
    If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
  • B
    If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
  • ✓
    If both the Assertion and Reason are incorrect.
  • D
    If the Assertion is correct but Reason is incorrect.
✓

Answer

Correct option: C.
If both the Assertion and Reason are incorrect.
c
Plasmid is a extra chromosomal $DNA$ present in prokaryotes e.g., bacteria.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (0.5 Marks)" from STD 12 - 9. biotechnology principlas and process→STD 12 - 9. biotechnology principlas and process — all question types→BIOLOGY STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

If forest area is reduced to half, which one of the following will be a long term effect
→
Match the disease in Column-I with the appropriate items (pathogen/ prevention/ treatment) in Column-II.
S.No. Column-I   Column-II
A. Amoebiasis i Teporema pallidum.
B. Diphtheria ii Use only sterilized food and water.
C. Cholera iii DPT vaccine.
D. Syphilis iv Use oval rehydration therapy.
→
The antibodies in the blood are secreted by :
→
If a haemophilic woman marries a normal man:
→
Malarial parasites could be best obtained from a patient
→
The animal called ........ evolved into the first amphibians that lived on both land and water.

Complete the given statement by choosing an appropriate option

→
Match the following
Column $- I$ Column $- II$
$(1)$ Grasses $(P)$ Prevent autogamy and geitonogamy
$(2)$ Hydrilla $(Q)$ Wind pollination
$(3)$ Cleistogamous flower $(R)$ Water pollination
$(4)$ Papaya $(S)$ Auto gamy
→
Which one of the following is the right matching pair of certain organism (s) and the kind of association?
→
What was the approximate height of Tri Reno Saurus?
→
Which of the following are the wrong statements

$I.$ Organs which are different in basic structure and origin but performs similar functions are called analogous organ

$II.$ Organs with different to basic structure and origin but perform similar functions are called homologous organs

$III.$ Homologous organs lead to convergent evolution

$IV.$ Analogous organ leads to divergent evolution

The correct combination is

→