Download App

MODEL PAPER 1 — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYMODEL PAPER 11 Mark
MCQ
The primary productivity in an ecosystem is expressed as:
  • A
    $gm^{-2}yr$
  • ✓
    $gm^{-2}yr^{-1}$
  • C
    $K\ cal\ m^{-2}yr^{-1}$
  • D
    $K\ cal\ m^{-2}$
✓

Answer

Correct option: B.
$gm^{-2}yr^{-1}$
Primary productivity expressed as $gm^{-2}yr^{-1}$

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 MODEL PAPER 1→MODEL PAPER 1 — all question types→BIOLOGY STD 12 Science question papers→Gujarat Board STD 12 Science question papers→Gujarat Board question paper generator→

Similar questions

Which among the following brings the amino acid to the protein synthesis site?
→
Which one of the following pairs of features is a good example of polygenic inheritance ?
→
A plant of $F1-$generation has genotype $“\text{AABbCC}”.$ On selfing of this plant, the phenotypic ratio in $F2-$generation will be.
→
Transcription means synthesis of:
→
The guts of various ruminants contain:
→
Alexander Von Humbolt described for the first time.
→
If a plant having yellow or round seeds was crossed with another plant having green and wrinkled seeds then $F_{1}$-progeny are in the ratio
→
Which of the following habitats is most unsuitable for primary productivity?
→
Assertion : Clitoris is not remnant of penis in females.

Reason : It also has high blood supply and erectile tissue.

→
In a $\text{DNA}$ strand the nucleotides are linked together by:
→