MCQ
The second attribute of population is:
- ✓Sex ratio
- BBirth rate
- CDeath rate
- DUrithermal
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$I.$ Ladybirds and dragonflies are used to get rid of aphids and mosquitoes
$II.$ The bacteria Bacillus thuringiensis $(B t)$ are used to control butterfly caterpillars
$III.$ Trichoderma sp. free living fungi, are present in root ecosystems where they act against several plant pathogens
$IV.$ Rhizobium is a symbiotic bacterium that lives in the stem of legumes
Which of the statements given above are correct?
$i. r-RNA$ provides the template for synthesis of proteins.
$ii.$$ t-RNA$ brings amino acids and reads the genetic code.
$iii. $$RNA$ polymerase binds to promoter and initiates transcription.
$iv. $A segment of $DNA$ coding for polypeptide is called intron.
$I$. Very long molecule
$II$. Double-stranded
$III$. $DNA$ or $RNA$
$IV$. Complementary to a part of desired gene
The correct pair is