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Gnom [1K]
4 years ago
11

orchids are a recently evolved plant that have a novel feature known as aerial roots. what is the most likely function of an orc

hid's specialized roots?
Biology
2 answers:
Paul [167]4 years ago
5 0
<span>Aerial roots allow the orchid to attach itself to trees.</span>
cluponka [151]4 years ago
5 0

Answer:

Option B, Aerial roots allow the orchid to attach itself to trees.

Explanation:

The options for this question are -

Aerial roots preserve water in the orchid.

Aerial roots allow the orchid to attach itself to trees.

Aerial roots produce food for the orchid through photosynthesis.

Aerial roots anchor the orchid to the ground.

Solution

Option D is incorrect because anchoring plants to the ground is not a specialized function as all the plants are grounded with the help of their roots only. Preserving water is also not a specialized function of roots. Roots cannot perform photosynthesis because they do not have chlorophyll and also they are not exposed to sunlight since they are buried deep inside the soil.  

Specialized roots of Orchids allow them to climb over other trees and remain intact there in order to obtain oxygen and water from the air.  

Thus, B is correct

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liraira [26]

<u>Answer</u>:

A) Determine the average number of times during a week in May that a group of bees visits flowers.

<u>Explanation</u>:

These observations may be mostly qualitative in nature at the real or exploratory stage of a study, but trials are usually done to show them in the form of quantitative data at some later stage. It is important that experimental information must be accumulated and arranged in a sequential fashion and in a form which can be understood by all: ideas may be more easily extracted, and results will be more easily drawn from data which have been arranged into a coherent pattern.

3 0
3 years ago
Match the following. 1. period during the life of a cell when it has finished mitotic division G1 phase 2. period during the lif
zimovet [89]

Ans.

The cell cycle includes a series of events that results in the formation of daughter cells from a single parent cell. These events include interphase, followed by M phase. The interphase consists of three phases, G0 (Gap 0) phase, G1 phase, S (synthesis) phase, G2 phase, while the M phase consists two phases, karyokinesis (mitotic or meiotic phase) and cytokinesis. At the end of cell cycle, cell enters into G0 phase again and the cycle goes subsequently.

The sequesnce of cell cycle events can be written as follows:

G0→G1→S→G2→M→G0→G1→....

Thus, according to the cell cycle sequence, these terms can be matched as:

1. When a cell finishes its mitotic division, it enters to G0 phase, which is also known as rest phase. Thus, statement 1. matches with G0 phase.

2. The period between end of mitosis and synthesis of genetic material for next mitotic division shows G1 phase, in which cell prepares itself for division. Thus, statement 2. matches with G1 phase.

3. The period of interphase between synthesis of new genetic material and the beginning of mitosis is G2. Thus, statement 3. matches with G2 phase.

4. The period between two mitotic division is interphase. Thus, statement 4. matches with interphase.

5. The period of cell division, during which a cell is performing actual cell division is M phase. Thus, statement 5. matches with M phase.

6. The period of interphase, during which genetic material gets doubled is synthesis or S phase. Thus, statement 6. matches with S phase.


6 0
3 years ago
Read 2 more answers
Pepsinogen is an:________.
Romashka-Z-Leto [24]

Answer:

The inactive precursor to the enzyme pepsin that digests proteins in the stomach. (Ans A)

Explanation:

Pepsin is known as a digestive enzyme which is present in humans and other species digestive system. It is produced by the stomach, where it helps to digest the proteins and break down into amino acids which are present in food. In the stomach, a cell is known as a peptic or chief cell that helps to release Pepsinogen.

The Pepsinogen secreted by Chief cells is an inactive form of pepsin, on exposure to HCL (hydrochloric acid secretion from Parietal cells), gets converted to the active enzyme pepsin because HCL provides necessary acidic environments where pepsin work best. Then Pepsin hydrolyzed the proteins to polypeptide and starts protein digestion in the stomach.

6 0
4 years ago
How do kidneys work with other body systems to maintain homeostasis
DIA [1.3K]
By filtering pollutants from the body. The kidneys filter the blood, which nourishes the systems of the body.
4 0
3 years ago
Operons are a(n) ____ sequence lying adjacent to the DNA being transcribed and are composed of a promoter located next to a(n) _
sladkih [1.3K]

Answer:

d. regulatory; operator; regulatory  

Explanation:

In prokaryotes, the regulation of gene expression is done at the transcription level by operons. Examples are the lac operon and the trp operon.  To initiate transcription, RNA polymerase and a DNA segment are required for binding called a promoter.

DNA segments that are close to the promoter serve as binding sites for regulatory, activating or repressing proteins. They are called operons.

The Operon is a regulatory sequence close to prokaryotic DNA that lies between the structural genes and the promoter. It is responsible for controlling the transcription of structural genes. When the repressor, encoded by the regulatory gene, binds to the operator, the promoter is blocked which prevents transcription.

The Promoter is located next to an operator and is the site in the DNA molecule that binds to RNA polymerase (which is a regulatory protein) to initiate transcription.

4 0
3 years ago
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