Explanation:
Woody plants, such as trees, tend to have more genetic diversity, on the whole, than vascular plants, such as grasses. Part of the diversity is due to the size of each species' geographic range and how far they can move their genetic information, for example through wind pollination or animal seed dispersers
Hello! Your answer is B, the chromosomes must replicate.
Meiosis is a process which takes one diploid cell (46 chromosomes) and makes 4 haploid cells (23 chromosomes). In order to do this, the DNA must divide. This is because it takes 46 chromosomes, to make 4*23 chromosomes, or 92.
We see here that the amount of chromosomes must double before meiosis. This therefore means A is incorrect, as the DNA only needs to duplicate 2 times. This also proves B correct, as the replication of chromosomes is what we're looking for.
C and D are incorrect, as they are actual processes in meiosis, meaning they do not happen before.
Hope this helps!
Answer:
Nitrogen fixing bacteria is the organism which is responsible for the fixing of atmospheric nitrogen for the plant.
Explanation:
Nitrogen fixing bacteria is a type of bacteria which fixes atmospheric nitrogen into ammonium and nitrates form. Plants are unable to take atmospheric nitrogen so it must be converted into available form i. e. nitrates and ammonium. Examples of nitrogen fixing bacteria are Cyanobacteria and Azotobactor etc.
Aerobic respiration requires oxygen to occur, and then it releases a large amount of energy. Anaerobic respiration occurs when glucose breaks down without any oxygen to produce a little energy, and lactic acid. Anaerobic respiration occurs when we exercise vigorously and the heart and lungs are not able to provide enough oxygen.
B - tectonic plates pulling apart.
