MCQ
The $DNA$ present in chloroplast is:
- ✓Circular, double stranded
- BLinear, single stranded
- CCircular, single stranded
- DLinear, double stranded
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$I.$ Increase in the volume of the thoracic chamber in dorsoventral axis
$II.$ Upward and outward movement of the ribs
$III.$ Contraction of intercostal muscles
$IV.$ Entry of air inside the lungs
$V.$ Contraction of the diaphragm
$VI.$ Increase in the volume of the thoracic chamber in antero-posterior axis
Choose the correct option
| Column$-I$ | Column$-II$ |
| $(a)$. A vector of disease | $(i)$ Bombyx |
| $(b)$. A gregarious pest | $(ii)$ Limulus |
| $(c)$. A living fossil | $(iii)$ Locusta |
| $(d)$. An economically important insect | $(iv)$ Culex |
$(i)$ Head is formed by the fusion of $6$ -segments.
$(ii)$ Mouth parts are biting and chewing type.
$(iii)$ Crop is the part of mid gut.