MCQ
The wrongly matched pair w.r.t. the organisms and their probable time of evolution is
- AJawless fish -around $350$ mya
- BLobefins -around $350$ mya
- ✓Fish-like giant reptiles -around $320$ mya
- DSea weeds -around $320$ mya
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$I.$ 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?