The later (second) formed primary xylem elements are called _____________.
1). Protoxylem
2). Metaxylem
3). Xylem parenchyma
4). Xylem fibres
1. The enzyme In whose presence glucose and fructose are converted into alcohol is
2. Question 9:Do you think microbes can also be used as source of energy? If yes, how?
4. Which one of the following is an abnormal constituent of urine
5. Which is used as an Air pollution indicator?
6. 10% law of energy transfer in food chain was given by -
7. In autotrophic bacteria, where is chlorophyll located?
8. __________________ is a leaf where the leaflets are arranged along the middle vein.