MCQ
In chondrichthyes, heart possesses.
- ATwo auricle and two ventricle
- ✓One auricle and one ventricle
- COne auricle and two ventricle
- DTwo auricle and one ventricle
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| $(a)$ Pila | $(i)$ Flame cells |
| $(b)$ Bombyx | $(ii)$ Comb plates |
| $(c)$ Pleurobrachla | $(iii)$ Radula |
| $(d)$ Taenla | $(iv)$ Malpighlan tubules |
Select the correct option from the following
$(a) \quad (b)\quad (c)\quad (d)$
$I$. sporophyte is multicellular, not free living but attached to the gametophyte for nourishment from it
$II$. some cells of the sporophyte undergo meiosis to produce haploid spores
$III$. these spores germinate to produce gametophyte