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rusak2 [61]
3 years ago
10

Which do you think has a stronger influence on a plant - gravity or light?

Biology
1 answer:
astra-53 [7]3 years ago
5 0

Influence of plant under gravity or light is described below.

Explanation:

  • Plants' growth response to gravity is known as gravitropism; the growth response to light is phototropism. ... As a result, root cells on the upper side of the root grow longer, turning the roots downward into soil and away from the light. Roots also will change direction when they encounter a dense object, such as a rock.
  • Geotropism (also called gravitropism) is the directional growth of an organism in response to gravity. Roots display positive geotropism when they grow downward, while shoots display negative geotropism when they grow upward. ... These cells contain small bodies that sink to the bottom of the cells in response to gravity.
  • Tropisms are growth-mediated plant movements that help plants to respond to changes in environmental stimuli. ... The plant response to gravity (gravitropism) and the response to unidirectional light (phototropism) have long been shown to be interconnected growth phenomena.

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If someone with auburn hair has children with someone with red hair (but whose mother had black hair ) what are the genotype and
tensa zangetsu [6.8K]

The phenotype is - 75 % red and 25 %brown.

The genotype is hRhR - 25%

hBkhR - 50%

hBrhBk - 25%.

<h3><u>Explanation:</u></h3>

The cross given here is a simple dominant - recessive relationship between the three types of alleles of hair colour. The genes of this characteristics are present in autosomes, so will be segregated equally among all the sexes of the offsprings.

Now the genotype of auburn and red with black mother is given. So during gametogenesis, the gametes from the parents will be

Father - hBr and hR

Mother - hBk and hR

So, the probable combinations are hBrhBk, hBrhR and hBkhR.

The frequency of the combinations are 25%, 25% and 50% respectively.

The phenotypic ratio will be red : brown as 3:1.

6 0
3 years ago
An ecosystem experiences a volcanic eruption that covers the area with lava. Which of the following organisms is most likely to
Alex787 [66]

Answer:B

Explanation

to be completely honesty i have no knowledge if learning the current benefactor of the object asked in this particular question.

6 0
3 years ago
A close friend has joined a clinical trial. When you ask her about the types of treatment she might be given, she tells you that
Radda [10]

Answer:

A. double-blind

Explanation:

Based on the scenario being described within the question it can be said that the type of trial that she has joined is known as a double-blind study. This is a type of study in which individuals are chosen randomly for each clinical intervention and the results are not given to the researchers until after the trial. This also includes any and all information that may influence the researchers behavior or thoughts on the study.

6 0
3 years ago
Read 2 more answers
Unusually high amounts of nitrogenous compounds in the blood is known as
SVEN [57.7K]
I believe it is azotemia.
4 0
3 years ago
A change in the genetic make-up, appearance, and behaviors of a species over time is called
Studentka2010 [4]

Answer:

evolution

Explanation:

For example, scientists believe that monkeys have evolved to become humans.

This clearly has happened over many millions of years.

Monkeys look really different from humans (don't you think!?).

This was just a random example that came to my head.

Hope this helps.

-Gumina

8 0
3 years ago
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