Download App

STD 11 - 2. Biology classification — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 2. Biology classification1 Mark
MCQ
Which one of the following is wrong statement?
  • A
    Anabaena and Nostoc are capable of fixing nitrogen in free­living state also.
  • B
    Root nodule forming nitrogen fixers live as aerobes under free­living conditions.
  • ✓
    Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins.
  • D
    Nitrosomonas and Nitrobacter are chemo­ autotrophs.
✓

Answer

Correct option: C.
Phosphorus is a constituent of cell membranes, certain nucleic acids and all proteins.
c
(c)  Phosphorus is present in plasma membrane in the form of phospholipid bilayer. It is an essential component of all nucleic acids not 'certain' nucleic acids. Moreover, phosphorus is never found in proteins.

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 (1 Marks)" from STD 11 - 2. Biology classification→STD 11 - 2. Biology classification — all question types→BIOLOGY STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

The exoskeleton of cockroach is made of which substance?
→
Fascicular, interfascicular and extra-stelar cambium together constitute
→
$A =$ Auricle, $V =$ Ventricle

Identify the correct examples of figures $A, B$ and $C$

→
Arrange the following events of meiosis in the correct sequence.

$I.$ Terminalization  $II.$ Crossing over

$III.$ Synapsis  $IV.$ Disjunction of genomes

The correct sequence is

→
Assertion: Organisms are made up of cells.
Reason: Cells are structural unit of living organisms. A cell keeps its chemical composition steady within its boundary
→
Organisms which have cells but no distinct nucleus
→
Which of the following process is responsible for the loss of extra water from the plants:
→
Which one of the following pairs is wrongly matched while the remaining three are correct?
→
Nicotiana and potato belongs to:
→
In Ulothrix $/$ Spirogyra, reduction division $($meiosis$)$ occurs at the time of:
→