MCQ
Fossils are dated now by
  • A
    Stratigraphic position
  • B
    Amount of calcium residue
  • C
    Association with other animals
  • Radioactive carbon $({C^{14}})$ contents

Answer

Correct option: D.
Radioactive carbon $({C^{14}})$ contents
d
It's Obvious

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

Similar questions

Assertion : Cocaine has a potent stimulating action on central nervous system, producing a sense of euphoria and increased energy.

Reason : Injecting the microbes intentionally during immunisation or infectious organisms gaining access into body during natural infection induces active immunity.

Assertion: $WBCs$ accumulate at site of wounds by diapedesis.
Reason: It is squeezing of leucocytes from endothelium.
Cerebral malaria is due to
Which one is ineffective against antibiotics
Which of the following structures contract and relax rhythmically to produce movement?
In Mendel's experiments with garden pea, round seed shape $(RR)$ was dominant over wrinkled seeds $(rr),$ yellow cotyledon $(YY)$ was dominant over green cotyledon $(yy).$ What are the expected phenotypes in the $F_{2}$ - generation of the cross $RRYY$ $\times$ $rryy$?
The phenotype of an individual may be affected if the modified allele produces

$(a)$ No enzyme at all
$(b)$ The normal/less efficient enzyme
$(c)$  $A$ non-functional enzyme

The increase in osmolarity from outer to inner medullary interstitium is maintained due to :
$(i)$ Close proximity between Henle's loop and vasa recta
$(ii)$ Counter current mechanism
$(iii)$ Selective secretion of $HCO _{3}^{-}$ and hydrogen ions in PCT
$(iv)$ Higher blood pressure in glomerular capillaries
What is incorrect statement about ecosystem?:
Assertion: Histamine is related with allergic and inflammatory reactions.

Reason: Histamine is a vasodilator.