Answer:
Explanation:
In a cross-section of an adult tree trunk, the outer layer that interacts with the environment is called periderm (Layer D). The second layer that follows the periderm is the phloem (Layer C). The next layer is the cambium, which produces phloem cells and xylem cells (Layer B). The secondary xylem follows the vascular cambium (Layer A) and finally, the medulla is located in the middle of the trunk.
The secondary xylem proceeds from the vascular cambium activity. Its cells are orientated in different ways composing the vertical/axial system and the horizontal/transversal system. The secondary xylem is essential to the tree growth in high because of its resistance and the capacity to transport water long distances. Secondary xylem functions are to transport water and minerals through its vessels and tracheids, to provide support and resistance to the plant, and to store reserve substances.
Answer:
D.) Insect
Explanation:
A bioindicator is a living organism that gives us an idea of the health of an ecosystem.
Smooth, rounded characteristics such as large eyes, fat cheeks, and a large head (i.e. babies) is very appealing to humans and other species (the way we call it "cuteness") which is a stimuli that promotes caring of babies and young children. This is also the same principle why humans find puppies, kittens, and other baby animals cute and want to care for them.
Explanation:
-Two
All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wound around histones as chromosomes. To produce daughter cells during cell division, the chromosomes (total number of chromosomes (2n)) are copied before the cell splits into two daughter cells. This process is known as mitosis, and occurs in cell division and growth processes. Two new nuclei are formed, along with identical cells. These are the same as the parent cell and the chromosome number (2n) is maintained.
Conversely in meiosis, the number of chromosomes (2n) is halved through meiotic divisions, producing 4 (n) germ cells (sperm or eggs), each containing half the number of chromosomes as its parent cell.
In crossing over, the exchange of segments of chromosome, between non-sister homologous or similar chromatids crossing over happens at chiasmata, the point where non-sister chromosomes are joined...
- independent assortment in metaphase I of meiosis: chromosomes align independently and genes segregate independently into new combinations- there are two possibilities of arrangement for the chromosome pair at the metaphase plate
- the principle of independent assortment determines that multiple (more than 2) individual characteristics assort independently and two distinct traits may have equal chances of occuring together
- the chromosome pairs form haploid cells which are randomized arrangements of homologous chromosomes.
Learn more about mitosis at brainly.com/question/4303192
Learn more about transcription at brainly.com/question/11339456
Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316
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Heredity is the passing on of traits from parents to their offspring, either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.