MCQ
Taxonomic studies depends on:
- AEcological information of organisms.
- BStructure of cell and development process of organisms.
- CExternal and internal structure of organisms.
- ✓All of the above.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Option | Characteristics | Class |
| $(a)$ | Sucking and circular mouth; jaws absent, integument without scales; paired appendages. | Cyclostomata |
| $(b)$ | Body covered with feathers; skin moist and glandular, fore-lims form wings; lungs with air sacs. | Aves |
| $(c)$ | Mammary gland; hair on body; pinnae; two pairs of limbs. | Mammalia |
| $(d)$ | Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. | Chondrichthyes |
$II.$ 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