STD 12 - 1. sexual reproduction in flowering plants — NEET STD 11 Science — Question

$I.$ Chemical fertilizers cause pollution of water bodies as well as groundwater, besides getting stored in crop plants. Therefore, environmental scientists are pressing for a switch over to organic farming.

$II.$ Organic farming is a form of agriculture that relies on techniques such as crop rotation, green manure, compost and biological pest Select the correct statement

Statement $I$: A protein is imagined as a line, the left end represented by first amino acid (C-terminal) and the right end represented by last amino acid ( $N$-terminal).

Statement $II$: Adult human haemoglobin, consists of $4$ subunits (two subunits of $\alpha$ type and two subunits of $\beta$ type.)

In the light of the above statements, choose the correct answer from the options given below:

 $\begin{array}{|l|l|} \hline Column\;-\;I & Column\;-\;II   \\ \hline A.\;Trypsin & 1.\;Intercellular\;ground\;substance \\ \hline B.\;GLUT-4 & 2.\;Hormone  \\ \hline C.\;Insulin & 3.\;Enzyme   \\ \hline D.\;Collagen & 4.\;Enables\;glucose\;transport\;into\;cells \\ \hline \end{array}$

Assertion $A$ : Late wood has fewer xylary elements with narrow vessels.

Reason $R$ : Cambium is less active in winters.

In the light of the above statements, choose the correct answer from the options given below :