Question

Consider the following five statements (A to E) w.r.t. chloroplast shown below. Select the correct option stating which ones are True (T) and which ones are False (F)
A. It is impermeable and lack porins
B. It is selectively permeable having carrier proteins for transport.
C. Stalked thylakoids one over other which is the site of production of assimilatory power
D. Present between two grana and contains enzymes of dark reaction
E. It contains enzymes for the synthesis of sugar and proteins

• A. A - F, B - T, C - T, D - T, E - T
• B. A - F, B - T, C - T, D - F, E - T
• C. A - T, B - F, C - T, D - T, E - T
• D. A - T, B - F, C - F, D - T, E - T

Answer 1

The correct option is B A - F, B - T, C - T, D - F, E - T

Chloroplast is an organelle found in green plants. It converts light energy into chemical energy. It contains porins on the cell membrane. This makes it permeable to small molecules. It is selectively permeable having carrier proteins for transport. Light reaction takes place in the thylakoids. Stacked thylakoids are called as grana. It is the site of photolysis of water and production of assimilatory power, that is NADPH and ATP. The dark reaction occurs in the stroma. The stroma is the colourless fluid present in the chloroplast. It contains enzymes of dark reaction. The chloroplast contains enzymes for the synthesis of sugar and proteins.

Thus, the correct answer is 'A - F, B - T, C - T, D - F, E - T.'