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ioda
3 years ago
13

In the periodic table, Groups are_____ columns.

Biology
1 answer:
AnnZ [28]3 years ago
8 0

Answer:

Vertical

Explanation:

Biology class :)

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Define each of the following terms and explain how each of them can benefit the plant.
Aneli [31]

Answer:

definition with benefit is given below of

1st. gravitropism

2nd. phototropism

3rd. thigmotropism

4th. photoperiod

Explanation:

1st is gravitropism

gravitropism is process in which plant grow in the direction that gravity act

It is also called geotropism

and

Gravitropism is important for plants because it directs the roots to grow in the downward direction that is important for obtaining nutrients

2nd is phototropism

phototropism  is the process in which plant growth directed by the light

and

we know plants need light to carry out photosynthesis

so  Phototropism direct the growth of the stem and branch toward sunlight

3rd is thigmotropism

thigmotropism is the directional change in growth of plant in response to a touch stimulus

and

thigmotropism is especially important for climbing plant that is use support to climb up

4th is photoperiod

photoperiod is the physiological change in organism in the response to length of the day and night

and

it play important role to determining the physiological developmental process in the plant such as budding and tuberization

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3 years ago
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Different organisms have different number of chromosomes

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3 years ago
Do You guys have summer school ?
scoundrel [369]

Answer:

yes, we have summer school

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2 years ago
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Drag each tile to the correct box a woman was chopping vegetables and she accidentally cut her finger a few days later she obser
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(Ch. 27.4) Many people are allergic to substances in the environment, such as ragweed pollen, as well as foods, such as peanuts.
djverab [1.8K]

Answer:

C. The substance does not directly harm tissues and is not a pathogen, but nevertheless triggers an inflammatory response.

Explanation:

When a person is allergic to a substance, his or her immune system recognizes a harmless substance, such as components in food, pollen, or dust, as a treat. As a consequence, it starts an immune response that leads to inflammation. The substance that starts the allergic reaction is called an allergen, and it is not a pathogen because it is not a real threat to the body since it does not infect cells. When the allergen enters the body, it binds to antibodies that are in contact with a special type of cell. These specific cells will release a substance known as histamine. Histamine will produce an inflammatory reaction affecting different tissues in our body. For example, it can make us sneeze, have a running nose, swelling parts of our body, have itchiness and redness, amongst others.

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3 years ago
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