- ✓The help of an intracellular second messenger.
- BEntering into the cell and modifying nuclear organization.
- CEntering into the cell and modifying cellular contents.
- DStimulating the receptors present on cell membrance.
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$(i)$ They are found in aquatic habitats and on decaying wood in moist and damp places.
$(ii)$ Mycelium is aseptate and coenocytic.
$(iii)$ Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile).
$(iv)$ Some common examples are Mucor, Rhizopus and Albugo.
$I.$ Breathing or pulmonary ventilation
$II.$ Diffusion of $O _{2}$ and $CO _{2}$ between blood and tissues
$III.$ Transport of gases by blood
$IV.$ Utilisation of $O_{2}$ by cells
$V.$ Diffusion of $O _{2}$ and $CO _{2}$ across the alveolar membrane
Choose the correct option
$I.$ Water ...$A\%$ $II.$ Urea ...$B\%$ $III.$ Uric acid ...$C\%$ $IV.$ Salt ...$D\%$
Choose the right options for $A , B , C$ and $D$ from given options