Question

Write a short note on plastie and endoplasma

Answer 1

Answer:

Z-plasty is a versatile plastic surgery technique that is used to improve the functional and cosmetic appearance of scars. It can elongate a contracted scar or rotate the scar tension line

Endoplasm generally refers to the inner (often granulated), dense part of a cell's cytoplasm. This is opposed to the ectoplasm which is the outer (non-granulated) layer of the cytoplasm, which is typically watery and immediately adjacent to the plasma membrane.

Answer 2

Answer:

PLASTIDS :

• Found in Plant Cell.
• Largest organelle in plant cell.
• On the basis of pigments, they are of 3 types -

1. Leucoplast : Colourless. They store material such as starch, oil, protein and granules.
2. Chromoplast : Colourful. They import colors thi flowers and fruits. They help in pollination and fruit dispersal.
3. Chloroplast : Green in colour. Bounced by two membranes. It traps solar energy to manufacture through photosynthesis.

ENDOPLASMIC RETICULUM :

• It is a large network of membrane bound tubes and sheets extending from outer nuclear membrane to plasma membrane.
• Depending upon presence and absence of ribosomes on its surface, it is of two types -

1. Rough Endoplasmic Reticulum : Ribosomes are attached on its surface for protein synthesis.
2. Smooth Endoplasmic Reticulum : Without ribosomes and secrets lipids.