Answer:
Different groups of bacteria help in the cycling of nitrogen , carbon and phosphorus by chemical fixing or releasing in environment.
Explanation:The ecosystem contains flow of energy and cycling of minerals.
In the cycling of minerals, the micro-organisms help in fixing atmospheric nutrients e.g., nitrogen fixation by some bacteria and release the nutrients to the environment by decomposition of organic matters.
Different groups of bacteria help in the cycling of nitrogen , carbon and phosphorus by chemical fixing or releasing in environment.
The process of <u><em>meiosis </em></u>increases genetic variability as it produces gametes for sexual reproduction
Explanation:
More complex organisms, including humans, produce specialized sex cells (gametes) that carry half of the genetic information, then combine these to form new organisms. The process that produces gametes is called meiosis. During meiosis, homologous chromosomes (1 from each parent) pair along their lengths.
Answer:
e. The statement is true for meiosis I only.
Explanation:
When we talk about homologous chromosomes, we talk about two chromosomes forming a pair of genes. One comes from the mother, and one comes from the father in sexual reproduction.
The random segregation of chromosomes is what we call the result of crossing over during meiosis I, and is what generates genetically unique individuals in each reproduction.
Well, a eukaryotic has a Membrane-Bound Nucleus.
