MCQ
In fluid mosaic model of plasma membrane.
- AUpper layer is non-polar and hydrophilic.
- BUpper layer is polar and hydrophobic.
- CPhospholipids form a bimolecular layer in middle part.
- DProteins form a middle layer.
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$B.$ Selaginella is advance among pteridophytes as it produces seeds
$C.$ Pinus leaves are monomorphic, pinnate compound and have sunken stomata as adaptation against transpiration
$D.$ Sporic meiosis is characteristic of life cycle in many organisms like Volvox, Chlamydomonas and Ulothrix.