Answer:
Allows farmers to grow plants using very little soil
Explanation:
Fertilizer helps us to return the nutrients to the soil for new or current plants to grow. These nutrients were spent by the plants that were there or the soil was not that rich with nutrients, to begin with. It will not replace soil and growing plants without soil is called hydroponics. Fertilizer is very useful in agriculture currently and most likely will continue to be a good way to grow plants for a while.
Hi there.
I believe these are called transposable elements.
~
1) Cells duplicate their chromosomes before dividing instead of after because the daughter cells would each lose one-half of the genetic information.
The duplication of chromosomes automatically leads to the duplication of the genetic information on the chromosomes and each daughter cell receives a copy each of the genetic information.
If the information are not duplicated before dividing, it means that each daughter cell will receive half information.
2) If a cell that starts with 16 chromosomes lost half of its genes during each cell division, it will take 4 divisions for the gene to remain 1.
- First division, the genes would remain 8 from 16
- Second division, the genes would remain 4
- Third division, the genes would remain 2
- Fourth division, the gene would remain only 1.
More on cell division can be found here: brainly.com/question/24276929
<u>Answer:</u>
Flagellum helps the cells to move.
<u>Explanation:</u>
- The blunt, more rounded end is often the head part from which the whip-like tail (flagella) is attached because of the presence of a flagellum, Euglena are also known as flagellates.
- Although one flagellum is often seen, they have two flagella, one of which is often hidden in a part of the Euglena referred to as reservoir.
- The longer, visible flagellum located at the anterior end of the organism twirls rapidly making it possible for these organisms to move across water surface
<u>Membrane</u>
- Unlike most plant cells, this species do not have a cell wall.
- The organelles of the organism and its cytoplasm are therefore bound by a plasma membrane that allows for easier movement.
- Observation of Euglena under more powerful electron microscopes have revealed the presence of an ornamented pellicle under the plasma membrane.
- The presence of this thin protein layer protects the their cell membrane and also helps in maintaining their shape.
- Moreover, because of their flexible nature, they also facilitate movement.
