1.
Tonoplast is a differentially permeable membrane surrounding the:

2.
Cell organelle found only in plants is:

3.
Chlorophyll contains:

4.
Organisms, which fix atmospheric nitrogen in the soil, are found among:

5.
Which of the following is a weed killer?

6.
In the nodules of roots in leguminous plants we find:

7.
When chlorophyll is burnt which one is obtained?

8.
The following is a naturally occurring growth inhibitor:

9.
Which is not essential micronutrient?

10.
During 24 hours there is a time when plants neither give O2 nor CO2. This is the time of: