MCQ
The longest bone of the thigh is
- APhalanges
- BTarsal
- ✓Femur
- DMetatarsal
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$(i)$ Methanogens are archaebacteria which produce methane in marshy areas.
$(ii)$ Nostoc is a filamentous bluegreen alga which fixes atmospheric nitrogen.
$(iii)$ Chemosynthetic autotrophic bacteria synthesize cellulose from glucose.
$(iv)$ Mycoplasma lack a cell wall and can survive without oxygen.The correct statements are
$R$- Conifers have needle like leaves.