MCQ
First three layers of microsporangium which does the function of protection are
- AEpidermis, middle layer, endothecium
- BEpidermis, mesocarp, endocarp
- ✓Epidermis, endothecium, middle layer
- DEpidermis, endocarp, mesocarp
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$(i)$ Crossing over
$(ii)$ Synapsis
$(iii)$ Terminalisation of chiasmata
$(iv)$ Disappearance of nucleolus
$(1)$ 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.