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lana [24]
3 years ago
13

Plants use oxygen in respiration. True Or False

Biology
1 answer:
MA_775_DIABLO [31]3 years ago
4 0

Answer:

True

Explanation:

very true

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​Wendell can tell that the trees on the mountain are very far away, because rather than being able to see individual trees and t
vovikov84 [41]

Answer:

The correct answer is - texture gradient.

Explanation:

The texture gradient is a depth cue that is a distortion in comparison of size in objects that are farther or closer. In this cue, it looks denser as u move away from the object.

It is dependent on the sense of the depth perception as Wendell can easily tell that trees on the mountain are far from him as he only sees a dense green patch instead of trees individual trees and space in between in them.

Thus, the correct answer is option - texture gradient.

3 0
3 years ago
Which level of biological organization consists of all of the living and non livingthings in a particular area?
WARRIOR [948]

Answer:

Ecosystem

Explanation:

The ecosystem includes a total of the abiotic and biotic components of a region. These components interact with each other and make the ecosystem self-sufficient in terms of energy and nutrients. Climatic conditions, physical factors, soil type, and its feature together make the non-living or abiotic part of an ecosystem. They interact among themselves and with the living components by nutrient cycling. All the species of living beings together make the biotic components of an ecosystem. They interact with each other by food chains and food webs.

Oceans are an example of the aquatic ecosystem while deserts are terrestrial ecosystems.

3 0
3 years ago
5. that which is produced as a result of a chemical reaction<br> quired to start a chemical reaction
bagirrra123 [75]

Answer:

products

  • The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products

Explanation:

hope it will help you

6 0
2 years ago
(20 POINTS)Which sentence below does not describe a structural adaptation
aleksandr82 [10.1K]

B. That is not related to the Structural adaptation. And are in you in K12?

4 0
3 years ago
Read 2 more answers
In the laboratory, a genetics student crossed flies with normal, long wings to flies with mutant, dumpy wings, which she believe
Marianna [84]

Answer:

a. Chi-Square Value = 0.12

b. Degrees of freedom = 1

c. Reject or fail to reject the hypothesis = fail to reject the hypothesis

Explanation:

<u>Available data:</u>

  • Cross: long wings to flies with mutant, dumpy wings
  • F1) 100% long-winged flies
  • F2)  672 long-winged flies 218 dumpy-winged flies
  • Hypothesis: the dumpy wing is inherited as a recessive trait

Let us name the allele for Long L and the allele for dumpy l

The number of observed individuals:

  • Total number: 890 flies (672 + 218)
  • Long-winged = 672
  • Dump-winged = 218

In the F2 generation, if l was a recessive allele and L a dominant allele, exhibiting complete dominance, we would expect a 3:1 phenotypic ratio.

Cross:          Ll   x   Ll

Gametes)   L   l    L  l

Punnett square)   L     l

                     L    LL    Ll

                      l     lL     ll

F2) 3/4 LL + Ll long-winged individuals

      1/4 ll dump-winged individuals

From this ratio and the total number of individuals in the F2 generation, we can get the expected number of individuals:

4 possible genotypes ------- 890 individuals

3 LL + Ll genotype ------------X = 667.5 long-winged individuals

1 ll genotype ---------------------X = 222.5 dump-winged individuals

 

Chi square = ∑ (O-E)²/E

LL + Ll = (O-E)² /E

LL+ Ll = (672 - 667.5) ² / 667.5

LL + Ll = 0.03

ll= (O-E)²/E        

ll= (218 - 222.5)² / 222.5

ll= 0.09  

  • Chi square= ∑ ((O-E)²/E) = 0.03 + 0.09 = 0.12
  • Freedom Degrees = genotypes - alleles = 3 - 2 = 1
  • Significance level = 0.05    
  • Table value/Critical value = 3.84

0.12 < 3.84 meaning that there is enough evidence to reject the null hypothesis.

Fail to reject the hypothesis.  The genotypes in the population might be in equilibrium H-W. L is the dominant allele, and l is the recessive allele. The dumpy wing is inherited as a recessive trait.

6 0
3 years ago
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