MCQ
Placenta is the region, where
- AFoetus is supplied by maternal blood
- BEmbryo is attached to mother by umbilical cord
- ✓Foetus receives maternal blood and nutrition
- DEmbryo is enclosed by membranes
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$(1)$ Many members of the genus glomusinvolved micorrhiza
$(2)$ It is responsible for all mineralsabsorption from the soil
$(3)$ Such associations show benefitsagainst draught and salinity in plants
$(4)$ Micorrhiza is a symbiotic relation ofalgae and plants