MCQ
Seed dormancy is due to the
- AEthylene
- ✓Abscisic acid
- C$IAA$
- DStarch
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| Column $I$ | Column $II$ |
| $A .$ Diakinesis | $1.$ Crossing over takes place |
| $B.$ Pachytene | $2 .$ Terminalisation of chiasmata |
| $C .$ Zygotene | $3 .$ Chromosomes align at equatorial place |
| $D .$ Metaphase | $4 .$ Pairing of homologous chromosomes |
Codes
$A \quad B \quad C \quad D$
$(i)$ Contractile vacuole takes part in osmoregulation and excretion.
$(ii)$ Food vacuole is formed by engulfing the food particles.
$(iii)$ The vacuole is bound by a double membrane called tonoplast.
$(iv)$ Vacuole can occupy upto $90$ percent of the volume of the cell.