STD 11 - 18. Neural control and coordination — BIOLOGY STD 11 Science — Question

$(i)$ All living organisms have ability to respond the environment stimuli which could be physical, chemical or biological.

$(ii)$ Plants respond to external factors like light, water, temperature, other organisms, pollutants, etc.

$(iii)$ Photoperiod affects the process of reproduction.

$(iv)$ Human being is the only organism who has self consciousness.

 $\begin{array}{|l|l|} \hline Column\,\,-I  & Column\,\,-II \\ \hline A.\,\,Plant\,\,growth\,\,promoters & 1.\,\,Auxin \\ \hline B.\,\,Plant\,\,growth\,\,inhibitor & 2.\,\,Gibberellin \\ \hline  & 3.\,\,Abscisic\,\,acid \\ \hline  & 4.\,\,Cytokinin \\ \hline \end{array}$

$A - B$