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NeTakaya
3 years ago
13

Why psilopsida are called early tracheophytes​

Biology
2 answers:
sesenic [268]3 years ago
8 0
Ieiekekekekdkekekekekskekekkekekwkw
krek1111 [17]3 years ago
8 0
Pteridophytes are tracheophyte (vascular) plants that mean they have specialized tissues for conduction of water and nutrients. Therefore, in pteridophytes, the substance transport is carried out through vessels.
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To survive, an organism must be able to maintain stable internal conditions in a changing environment. This process is called ho
Reptile [31]

Answer:

1. Initial air temperature: 0 °C (32 °F)

2. Initial body temperature: 37 °C (99 °F)

3. The expected effect of different factors on body temperature are:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Adding clothing: Increase

   D. Exercising: Increase

Explanation:

The question is incomplete, it is necessary to look for a software related to this homework.

<u>Homeostasis is a property of organisms that consists in their capacity to maintain a stable internal condition by compensating for changes in their environment</u> through the regulated exchange of matter and energy with the exterior. It is a a dynamic equilibrium controlled by a mechanism of feedback that constitute the self-regulating mechanisms. Examples of homeostasis are temperature regulation and the balance between acidity and alkalinity (pH)

The Human Homeostasis Gizmo™ is a software that allows you to explore  how the human body stays at a nearly constant  temperature in different conditions.  To use it, you have to set the air temperature at 0 °C (32 °F) and the body temperature at 37 °C (99 °F), and click Play. After a simulation of 1 hour, then click Pause and gather the information. Then, do the same cprocedure  to test the effect of other factors and Click Reset between each trial. To determine the effect of different factors on body temperature, you have to compare the  final body temperature to the final body temperature while  there is no specific movement or change.

Then:

1. Initial air temperature: 0 °C (32 °F)

2. Initial body temperature: 37 °C (99 °F)

3. The expected effect of different factors on body temperature are:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Adding clothing: Increase

   D. Exercising: Increase

This is for a logical reason, anything you do to heat it or generate heat, will increase the temperature. And anything you do to generate cold, will lower the temperature.

The effect of different factors on body temperature according to Gizmo:

   A. Raising air temperature: Increase

   B. Lowering air temperature: Decrease

   C. Click Add to a sweatshirt, hat, pants, and  parka. Then, adding clothing:

   Maintained

   D. Set the Exercise level to 70%, then exercising: Increase

When the temperature increases, it is because you are able to record the results from the software and you see temperature goes from 99 °F to 100 °F. When the temperature decreases. it is because it goes from 99 °F to 97 °F. When it is maintained, there is no change.  

5 0
3 years ago
1. What percentage of puppies would have the same genotype as the<br> parents, Ww?
wolverine [178]

Answer:

50%

Explanation:

This question involves a single gene with two alleles W and w in puppies. According to the question, the genotype of the parent organisms are Ww. In a cross between the two parents i.e. Ww × Ww, the following gametes will be produced by each parent: W and w.

Using these gametes in a punnet square (see attached image), the following genotype of offsprings will be produced: WW, Ww, Ww, ww. Hence, based on this question, the percentage of puppies that would have the same genotype as the parents, Ww are 1/2 × 100% = 50%.

8 0
3 years ago
What has prokaryotic cells?<br> Onion root<br> Cows liver or<br> Human blood
stira [4]
None of them.

I'm assuming that you left off an option. a prokaryotic cell is a single-celled organism, generally a bacteria. an example would be e-coli. 
4 0
3 years ago
Read 2 more answers
Which change of state is shown in the model? condensation, boiling, sublimation or freezing
pishuonlain [190]

Answer:

Freezing.

Explanation:

5 0
3 years ago
Read 2 more answers
Explain the process of "Natural Selection." Use and underline/highlight the following words correctly in your explanation: (6 wo
MArishka [77]
Due to the overproduction of offspring with only finite resources, species begin to engage in competition for survival. In order to increase their chance of survival, certain species will begin to develop genetic variations that allow them survival advantages.
4 0
3 years ago
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