Download App

STD 12 - 12. ecosystem — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 12 - 12. ecosystem4 Marks
MCQ
Driving force of an ecosystem is
  • A
    Producer
  • B
    Carbohydrates in plants
  • C
    Biomass
  • ✓
    Solar energy
✓

Answer

Correct option: D.
Solar energy
d
(d)In any ecosystem the basic or ultimate source of energy is sunlight.

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Diplotene phase of meiosis is also characterised by
$a$. Desynapsis  $b$. Complete terminalisation of chiasmata  $c$. Dictyotene stage
$d$. Complete disappearance of nuclear membrane and nucleoli
$e$. Complete development of astral rays and aster  $f$. Longest phase of prophase-$I$
→
Actinomorphic nature of flower is represented by which of the following symbols?
→
Cortex and pith are not distinguished in
→
The most effective wavelength of visible light in photosynthesis is in the region of
→
Angiosperms differ from gymnosperms in having
→
Read the following five statements $(A$ to $E)$ and select the option with all correct statements.

$A.$ Mosses and lichens are the first organisms to colonise a bare rock.

$B.$ Selaginella is a homosporous pteridophyte.

$C.$ Coralloid roots in Cycas have $VAM$.

$D.$ Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic.

$E.$ In gymnosperms, male and female gametophytes are present within sporangia located on sporophyte.

→
Chromosome $1$ has most genes $Y$ has the fewest .......
→
Match items in

Column I with those in    Column II

Column I                                               Column II 

(A) Peritrichous flagellation                        (J) Ginkgo

(B) Living fossil                                           (K) Macrocystes

(C) Rhizophore                                           (L) Escherichia coli

(D) Smallest flowering plant                       (M) Selaginella

(E) Largest perennial alga                          (N) Wolffia Select the correct answer from the following

 

→
Assertion : Vessels are more efficient for water conduction as compared to tracheids.
Reason : Vessels are dead lignified
→
When a $CO_2$ molecule enters in Calvin cycle at that time $3$ molecules of ........... and $2$ molecules of .............. are required.
→