STD 11 - 5. Morphology flowering plants — BIOLOGY STD 11 Science — Question

$(i)$ All the cells of the epithelium are held together with little intercellular materials.

$(ii)$ In almost all animal tissues specialized junction provide both structural and functional link between its individual cells.

$(iii)$ Tight junctions help to stop substances from leaking across a tissue.

$(iv)$ Adhering junctions provide cementing to keep neighbouring cells together.

$(v)$ Gap junctions provide cytoplasmic channels between cells for passage of ions, small molecules and sometimes big molecules.

$II.$ Nitrogenous waste are absorbed by active transport

$III.$ Conditional reabsorption of $Na ^{+}$and water takes place in $DCT$

$IV.$ $DCT$ reabsorbs glucose

$V.$ $DCT$ is capable of selective secretion of $H ^{+}, K ^{+}$and $NH _{3}$ to maintain $pH$ and $Na ^{+}- K ^{+}$ balance in blood

$VI.$ Substances like glucose, amino acids, $Na ^{+}$, etc, in the filtrate are reabsorbed actively

Choose the option with incorrect statements