Answer: b. Secondary metabolites are often the desired product, and are only produced in stationary phase.
Explanation:
The secondary metabolites are the organic compounds that are produced by the microbes such as bacteria, fungi and even by the plants. These are not involved in the growth, development and reproduction of the organisms. But they can provide a advantage for the survival. It helps in plant defense against the process of herbivory and other interspecies defense. Humans take the secondary metabolites from these organisms in the form of medicines, pigments, and recreational drugs.
The secondary metabolites are produced only in the stationary phase of growth. Thus it is significant for the collection of these secondary metabolites in the stationary phase.
A deer eats certain plants, but if there is variation, it may like certain plants more than others. The deer may be causing extinction to those certain plants because of eating to much of it. The variation effects the survival of a species because of its unique characteristics called adaptations within the species. If there was a change in an environment, you have a greater chance of survival. Take the deer example. If they had stayed the same, all of that species could have survived because the deer did not eat it, or all of it could have not survived if a new organism changed the environment and ate it. However, with variation only a few of that species may die.
Hello there! :) I provided info for you below, hope it helps.
SO basically...Running water on the surface of the earth erodes the land. Groundwater also can cause erosion under the surface. As water flows through the soil, acid is formed. This acid can cause minerals to be dissolved.
((((((((((((((((((((<u><em> A </em></u>))))))))))))))))))))))))))))))))) ><u><em>The answer</em></u><
Minerals that are carried in groundwater can also be deposited in other places. This cycle of erosion and deposition can cause underground caves to form. This happens especially in areas where there is limestone below the surface.
A cave is an underground opening. It has a connection to the surface of the earth. A cave is formed by the erosion of limestone under the ground. The acid water moves through the cracks in the limestone and makes them larger.
So the first one provided will be your answer! :3 <3
Herbicides are a broad category of pesticides that are used to get rid of undesirable plants like weeds and grasses that hinder the development and productivity of desired agricultural crops. Both 2,4-D and 2,4,5T are also known as 2,4-Dichlorophenoxyacetic acid and
- Herbicides like 2,4-D and 2,4,5-T are also referred to as auxin-type herbicides or plant growth regulators. Auxins are hormones that affect cell division and elongation in order to control cell growth.
- Auxins are required by plant cells in the proper concentration for growth and development. If auxin levels are too low, plant growth is not promoted at all, and if levels are too high, plant growth is excessively stimulated.
- Most grasses are not killed by 2,4-D and 2,4,5 T, but broadleaf weeds are. It moves to the plant's meristems after being absorbed through the leaves.
- These herbicides affect the tissues' cells, causing them to continually divide and proliferate. The plant finally dies as a result of this unchecked, unsustainable growth, which also causes stem curling and withering of the leaves.
Thus, by promoting cell division, these compounds act as herbicides.
Learn more about herbicides:
brainly.com/question/21807353
#SPJ9