
- AA, B, C only
- BA, B, D only
- CB, C, D, only
- DAll

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$(a)\; DNA$ is negatively charged molecule and so it is loaded on gel towards the Anode terminal
$(b) \;DNA$ fragments travel along the surface of the gel whose concentration does not affect movement of $DNA.$
$(c)$ Smaller the size of $DNA$ fragment larger is the distance it travels through it.
$(d)$ Pure $DNA$ can be visualized directly by exposing UV radiation.
Choose correct answer from the options given below
$(a)$ It is also called as the earlywood
$(b)$ In spring season cambium produces xylem elements with narrow vessels
$(c)$ It is lighter in colour
$(d)$ The springwood along with autumnwood shows alternate concentric rings forming annual rings
$(e)$ It has lower density
Choose the correct answer from the options given below:
$A$. Microtubules - Structural components of cilia
$B$. Centrioles - Store hydrolytic enzymes
$C$. Amyloplasts - Store oil protein and starch in plants