I think the correct answer from the choices listed above is option A. The balanced equation representing the decomposition of lead oxide would be that <span>PbO2 = Pb + O2. It decomposes into oxygen gas and lead metal. Hope this answers the question.</span>
First nucleus in pollen grain divide to form generative nucleus and tube nucleus. the generative nucleus divide to form two sperm nuclei, while tube nucleus help in the development of pollen tube.
<span>The size of plasmids<span> ranges
between 1 and 200 kbp (kilo-base pairs) and a DNA fragment that can be
inserted into a </span>plasmid vector is up
to 20 kbp. Artificially constructed plasmids are often used as vectors in
genetic engineering to clone and amplify (or express) particular genes. </span>
The membranes that surround and protect the brain and spinal cord are called meninges.