Chromosomes have hereditary function that are capable of self-duplication and they have thread-like structures seen inside the nucleus of plant and animal. In plants, they go through a cycle called alteration of generation that has multicellular stages. One is sporophyte that is a diploid, and the other is gametophyte with a haploid.
Moreover, spores are produce through meiosis so it go through a process of chromosome reduction in order to create a haploid spores. While, gametes undergo mitosis and the structure is already a haploid, which means that the number of chromosomes will not change in order to produce haploid. In this case, the plant have both spores and gametes and the similarities is that, they are both singles celled and a haploid. Therefore, the number of the chromosome in the gametophyte generation is also 32.
Renewable resources are the resources which can never be exhausted. The difference between fresh water and coal is that, fresh water is a renewable resource, while coal is a nonrenewable resource.
<h3>What are the types of natural resources?</h3>
Natural resources are materials that people utilize from the Earth.
Generally, resources can be grouped under two categories, i.e. renewable and nonrenewable resources.
- Renewable resources: The resources that can be grown again or in other words the resources that can never be exhausted are called renewable resources. Examples solar energy, fresh water, trees, etc.
- Non-renewable resources: These resources are present in a fixed amount in environment or one can say that these can never be replenished if exhausted once. Example coal, oil, fossil fuels, etc.
Thus, the correct option is D.
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