MCQ
Biogeochemical cycling means cycling of:
- AEnergy in ecosystem
- BGases between plants and the atmosphere
- ✓Nutrients in an ecosystem
- DNone of the above
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Match the following:
| Column $- I$ | Column $- II$ |
| $(p)$ Intine | $(v)$ Long structure |
| $(q)$ Exine | $(w)$ Nutrition to pollengrain |
| $(r)$ Pollentube | $(x)$ Sporopollenin |
| $(s)$ Tapetum | $(y)$ Pectin, cellulose |
| $(z)$ Glycogen |