<h2>Development of Plant Needles</h2>
Explanation:
- Seed of pitch pine treated with colchicine delivered tetraploid seedlings which had thick and sporadic needles and less fortunate tallness and diameter growth than ordinary seedlings.
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In test of colchicine-initiated polyploidy in pines, researcher found that a significant number of the polyploid plants returned to a diploid development in light of the fact that the polyploid cells partitioned at a more slow rate and were overwhelmed by the more quickly developing diploid cells which encompassed them.
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The primary needles of both diploid and polyploid plants were more effective at low light intensity than secondary needles, and they had lower compensation points.
Answer:
Rough endoplasmic reticulum extends from the nucleus to the cell membrane and holds ribosome at its surface.
Explanation:
Endoplasmic reticulum is of 2 types rough endoplasmic reticulum and smooth endoplasmic reticulum.
Rough endoplasmic reticulum is named so because it contain ribosome on its surface as a result rough endoplasmic reticulum play a significant role during translation or protein biosynthesis.
Rough endoplasmic reticulum extends from the nucleus that"s why most of the proteins of rough endoplasmic reticulum is accessed by the nucleus and if any proteins of RER or rough endoplasmic reticulum is not properly folded or misfolded then specific signals are send from nucleus for the correct folding of proteins of RER.
This fish is called a jawless fish because it doesnt have any scales
