MCQ
The class of phylum chordata to which bat belongs
- ✓Mammalia
- BReptilia
- CAves
- DAmphibia
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$(i)$ Cilium / Flagellum contains an outer ring of nine doublet microtubules surrounding two singlet microtubules.
$(ii)$ Cilia are smaller which work like oars, causing the movement of either the cells or surrounding fluid.
$(iii)$ Flagella are comparatively longer and responsible for cell movement.
$(iv)$ Cilium and flagellum are covered with plasma membrane. Which of the above statements are correct?
| Types of cells (Langerhans) | Hormones |
| $\alpha$ - cells secrete | $A$ |
| $\beta-$ cells secrete | $B$ |
| $\delta$ - cells secrete | $C$ |
|
Column $-I$ |
Column $-II$ |
|
$A.$ Zona reticularis |
$1.$ Outer layer (adrenal cortex) |
|
$B.$ Zona fascicular |
$2.$ Inner layer (adrenal cortex) |
|
$C.$ Zona glomerulosa |
$3.$ Middle layer (adrenal cortex) |