MCQ
The lateral roots generally originate in
- AEndodermal cells lying against phloem
- BCortex
- ✓Pericycle cells lying against protoxylem
- DCork cambium
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| Column-$I$ | Column-$II$ |
| $A$. Tonoplast | $I$. Contain digestive enzyme |
| $B$. Contractile vacuole | $II$. Store metabolic gases |
| $C$. Food vacuole | $III$. Excretion |
| $D$. Air vacuole | $IV$. Transport of ions in plants |
$(1)$ Decomposition is largely an oxygen -requiring process.
$(2)$ Warm and moist environment slow down decomposition process.
$(3)$ Decomposition rate is slower if detritus is rich in lignin and chitin
$(4)$ Humus is colloidal in nature it serves as are servoir of nutrients.
| Compound | Function |
| $2,4-D$ | $A$ |
| $B$ | Fruit ripening |