MCQ
Corolla with four diagonally arranged petals is
- AVexillary
- ✓Cruciform
- CGamopetalous
- DCaryophyllaceous
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| Column $I$ | Column $II$ |
| ($a$) $G _{1}$ phase | ($i$) Cell grows and organelle duplication |
| ($b$) $S$ phase | ($ii$) $DNA$ replication and chromosome duplication |
| ($c$) $G _{2}$ phase | ($iii$)Cytoplasmic growth |
| ($d$) Metaphase in $M$-phase | ($iv$) Alignment of chromosomes |
$I.$ Diffusion membrane is made up of $3$ layers
$II.$ Solubility of $CO _{2}$ in blood is higher than $O _{2}$ by $25$ times
$III.$ Breathing volumes are estimated by spirometer
$IV.$ High $H ^{+}$ in blood favours oxygen dissociation
Choose the correct option