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DerKrebs [107]
3 years ago
5

Why do leaves not test positive for starch early in the morning but they do at the end of the day?

Biology
1 answer:
Oksanka [162]3 years ago
5 0

Answer:

Because they are yet to perform photosynthesis, which requires sunlight

Explanation:

The leaves of plants are the site of a unique process called PHOTOSYNTHESIS. Photosynthesis is the process by which plants synthesize their food in form of glucose in the presence of sunlight. The glucose they synthesize is however, stored as STARCH (a carbohydrate polymer) in the leaves. This is why the leaves of a plant will naturally test positive for starch at certain times.

However, the leaves of plants will not test positive for starch early in the morning but do so at the end of the day because the leaves of that particular plant is YET to undergo photosynthesis due to lack of light from sun. However, at the end of the day, it would have performed photosynthesis and synthesize sugar and hence, test positive.

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What is it called when a living thing copies the appearance of another living thing as a mean of protection?
anygoal [31]

Answer:

It is called mimicry when a living thing copies the appearance of another living thing as a means of protection.

Explanation:

Mimicry is used primarily by living things as a means for protection and to decrease the chances of the living thing being killed. For example, a frog that is prey to a toad could have bright colors (bright color frogs are often poisonous) that don't mean anything to the frog and it's species, but to the toad, the frog is poisonous and should not be eaten, so the toad does not eat the frog because it is brightly colored.

Without mimicry, the frog would have been eaten because it wouldn't have had looked like a poisonous frog, or something that the toad would avoid.

4 0
3 years ago
Does this look correct?<br><br> (second image is the word bank)
Vilka [71]
It looks correct to me. Good job
4 0
3 years ago
HELP
Anastasy [175]

Answer:

First, the activity that humans execute that affects their ecosystem positively is reforestation. Second, the activity that humans execute that affects their ecosystem positively is hunting. Their effects rely completely in nature, however, one improves the ecosystem by making it greener and increasing the space nature has to grow, while the other impacts the ecosystem negatively by unbalancing the food chain.

Explanation:

The reasons behind this answer are that in the first place the ecosystem is a very sensitive environment that can be affected by a wide range of factors. In the first place, reforestation helps the environment have better conditions for the animals that live in it, as well as to provide the human race a better quality of air, water and feel better after living in a more natural ecosystem. While hunting breaks the ecosystem's balance because it allows the food chain of the ecosystem to break and allow a general modification.

6 0
3 years ago
The device that is attached to the receiving end of the medium and splits off each signal to deliver it to the appropriate recei
QveST [7]
Demultiplexor is your answer.. hope this helps.
7 0
4 years ago
What are five changes to the planet that are most likely to happen because of the change in global climate?
dem82 [27]

Answer:

increase of greenhouse gases

increased temperature

melting of polar iced caps

raised sea levels

frost free/ growing season will lengthen

more drought and heat waves

increased intensity of hurricanes

heres more-

https://climate.nasa.gov/effects/

8 0
3 years ago
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