MCQ
What is not seen during mitosis in somatic cells?
- ASpindle fibre
- BChromosomes movement
- CDisappearance of nucleolus
- ✓Synapsis
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$(i)$ Plant cells have centrioles which are absent in almost all animal cells.
$(ii)$ Ribosomes are the site of protein synthesis.
$(iii)$ The middle lamella is a layer mainly of calcium carbonate which holds the different neighbouring cells together.
$(iv)$ In animal cell, steroidal hormones are synthesized by smooth endoplasmic reticulum.
Of the above statements
Reason : A gene incorporated in the bacterial chromosomal genome-gets automatically transferred to the crop with which the bacterium is associated.