MCQ
Which is correct about veins
- AValves are absent
- ✓Carry blood towards heart
- CAlways carry oxygenated blood
- DAlways carry deoxygenated blood
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| Column $-I$ | Column$- II$ |
| $(a)$. Cuscuta | $(i)$ Hygroscopic root |
| $(b)$. Rhizophora | $(ii)$ Stilt root |
| $(c)$. Vanda | $(iii)$ Haustorial root |
| $(d)$. Pandanus | $(iv)$ Respiratory root |
$II.$ It consists of cells which are thickened at the corners
$III.$ It often contains chloroplast
$IV.$ Intercellular spaces are absent
$V.$ They provide mechanical support to growing parts of plants The above characters are attributed to
$I$. The impulse of the heart beat originates from $SAN$
$II$. Rate of the heart is determined by $SAN$
$III$. Bundle of His/AV bundle is present in the interventricular septum
$IV$. Atrio Ventricular Node $(AVN)$ is situated in the lower left corner of the right auricle
Choose the correct option