MCQ
Lignified cell wall is the characteristic feature of
- APhloem cells
- BEpidermal cells
- CCambial cells
- DXylem cells
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$(1)$ Frog is a poikilotherm.
$(2)$ Frog does not have any coronary circulation.
$(3)$ Heart is “myogenic” in nature.
$(4)$ Heart is autoexcitable.