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Vaselesa [24]
3 years ago
13

Directional growth of a plant in response to light is known as

Biology
1 answer:
iVinArrow [24]3 years ago
3 0
The answer is Phototropism, this is because the tip of the plant moves towards the light and the auxins make the plant elongate on the side with no light.
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When you walk your dog you are using energy from the sunlight to power this activity .Explain
swat32
Well when you perform this action you are using some percentage of the sunlight energy as you obtained it from a food that either came from a plant source or an animal source. Also plants are able to make their own food using sunlight i.e

Plants give energy to animals and animlas give energy to humans
or
Plants give energy to humans.
Hope this helps :).
8 0
3 years ago
In his experiments with different competing pairs of Paramecium species, Gause found that sometimes both species persisted and s
UkoKoshka [18]

Answer: The options are not given, here are the options.

A. One species is much better competitor than the other.

B. Periodic disturbances allow for coexistence.

C. Two species tended to use different resources.

D. The two species experienced interference competition and not exploitative competition.

The correct option C.

Two species tended to use different resources.

Explanation:

From Gause experiments on competing paramecium pairs, He found out that most times both species persisted and sometimes only one did because the two species uses different resources.

Organisms normally compete for limited resources in order to survive and one intend to compete well while other suffer. Both in the case of competing paramecium pairs, the pair use different resources which make the to persist and survive well. Once the resource of one finishes, the other one will persist because it is still surviving on its available resources.

5 0
3 years ago
A plant breeder has determined the following variances for yield of corn in his fields:
Law Incorporation [45]

Answer:

A. VG = 80

B. Broad sense heritability = 0.80

C. Narrow sense heritability = 0.30

D. Average yield = 430 Units

Explanation:

A. Given that

VA = 30

VD = 50

VI = assumed not available

Therefore

Total genetic variance (VG) = VA + VD

= 30 + 50

= 80

VG = 80

B. Given that

VP = 100

VG = 80

Broad sense heritability, H2 = VG/VP

= 80/100

= 0.80

C. Given that

VA = 30

VP = 100

Narrow sense heritability, h2 = VA/VP

=30/100

= 0.30

D. The difference in selection = 500 - 400

= 100

Recall,

Selection response is heritability multiplied by selection differential.

That is

R = h2S

Selection differential = 100

Heritability h2 = 0.30

Selection response = 0.30 × 100

= 30units

Therefore, expected average yield = 400 + 30

= 430 Units

6 0
3 years ago
A fast-flowing river of air that forms when two air masses of very different temperatures meet is called a/the
WITCHER [35]

Answer: jet stream if im not mistaken

Explanation:

4 0
3 years ago
Cross a mother who carries the hemophilia gene but does not express it, With a father with hemophilia
alisha [4.7K]

Answer: The cross will produce 4 offsprings with the following genotypes:

XhXh, XhX, XhY and XY.

Explanation: Hemophilia is an X-linked disease. A woman who carries the hemophilia gene but doesn't not express it is heterozygous, therefore she has a genotype of XhX, and a man who has hemophilia has a genotype of XhY. A cross between them will produce one female and one male who are hemophilic (XhXh and XhY), one female who is a carrier (XhX) and one normal male.

See the punnett square attached for the cross

3 0
3 years ago
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