MCQ
In short day plants, flowering is induced by.
- ALong night.
- BShort photoperiod and interrupted long night.
- CPhotoperiod less than 12 hours.
- DPhotoperiod below a critical length and uninterrupted long night.
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$(i)$ The endomembrane system includes plasma membrane, ER, Golgi complex, lysosomes and vacuoles.
$(ii)$ ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
$(iii)$ Ribosomes are involved in protein synthesis.
$(iv)$ Mitochondria help in oxidative phosphorylation and generation of $ATP$.
$A.$ The dry surface of the skin and the moist surface of the buccal cavity. Are lined by compound epithelium.
$B.$ Cuboidal epithelium facilitates diffusion across the epithelium.
$C.$ Intercalated discs are the cell junctions between the cardiac muscle cells.
$D.$ Skeletal muscle fibers can be located in the biceps muscle.
$E.$ In a bone, osteocytes are located in lacunae.