Leaf diseases of deciduous hardwood trees are grouped. into six categories, to simplify their identification, as follows 1. (See Figure 1a-f for a pictorial representation of the symptoms.) AnthracnoseâIrregular dead areas on leaf margins, between. and across and/or along veins, often moving onto the.
That depends on what organism the cell belongs to. A nucleus of a normal human cell contains 46 chromosomes, whereas this is a double chromosome set, i.e. we have 23 pairs of chromosomes that are used for the same functions. Two chromosomes that fulfill the same functions are called homologous.
The nucleus of a cell contains threadlike structures that contain genetic material called chromosomes.n the nucleus of each cell in the human body (excluding gametes  [23]) there are 46 chromosomes, these chromosomes consist of lots  of different genes that all join up toge â¦ ther (A to T, G to C) and  each gene has a code for a certain part of your body. 14 people found this useful.