A diagram should show nucleus as a dark round body, ER as a network around it and rod-shaped mitochondria and chloroplasts. Label all parts clearly to represent the structure of a cell.
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Yes, white flowers may contain pigments but lack coloured pigments. They reflect all light, appearing white. Sometimes, absence of pigment also causes the white colour in flowers.
Vacuoles store water, nutrients and waste materials in cells. In plant cells, large vacuoles maintain pressure and keep the cell firm, helping plants stay upright.
Flowers, fruits and vegetables get different colours due to pigments present in chromoplasts. These pigments produce red, yellow or orange colours, making plant parts attractive.
Yes, mature red blood cells in humans lack a nucleus. This helps them carry more oxygen. Some other specialised cells may also lose their nucleus to perform specific functions efficiently.