Root hair cells are specialized cells found in the root epidermis of plants, which have a function of absorbing water and minerals from the soil.
Root hair cells are one of the most specialized cells of a plant, with long, thin protrusions extending out of the cell that increase the surface area available for absorption of nutrients. These cells are specifically adapted for their function of absorbing water and minerals from the soil.
The thin cell wall and large central vacuole in the root hair cell allow for the diffusion of water and minerals into the cell. Additionally, the presence of numerous mitochondria in the cell allows for active transport of ions against a concentration gradient, which is required for the absorption of some minerals.
The specialization of root hair cells is not limited to their morphology, but also extends to their gene expression. Several genes have been identified that are specifically expressed in root hair cells, and they play a crucial role in the development and function of these cells.
Overall, root hair cells are a crucial component of plant nutrition, and their specialized structure and function allow for efficient uptake of water and minerals from the soil.
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The compositional layer that is divided between three mechanical layers is the Earth's crust. The Earth's crust is the outermost layer of the Earth's solid surface and is composed of several distinct mechanical layers, namely the lithosphere, the asthenosphere, and the mesosphere.
1. Lithosphere: The lithosphere is the rigid, outermost mechanical layer of the Earth's crust. It is composed of the uppermost part of the mantle and the crust. The lithosphere is broken into tectonic plates that float and move on the semi-fluid asthenosphere below.
2. Asthenosphere: The asthenosphere is a semi-fluid, plastic-like layer beneath the lithosphere. It is composed of hot, weak, and partially molten rock materials. The asthenosphere allows the tectonic plates of the lithosphere to move and interact with each other.
3. Mesosphere: The mesosphere, also known as the lower mantle, is the deepest mechanical layer beneath the asthenosphere. It is a more rigid and solid layer compared to the asthenosphere. The mesosphere extends from the bottom of the asthenosphere to the Earth's outer core.
Together, these three mechanical layers form the Earth's crust, which is the outermost compositional layer of the Earth.
inheritance research
forensic science
study of cork bark
The discovery of mitochondria (mtDNA) had no effect on the study of cork bark. Thus, the correct option is D.
Mitochondria may be defined as a rod-shaped cell organelle found in the cytoplasm of the cell. It is a double membrane-bound cell organelle that is known as the powerhouse of the cell.
This is because the energy required for various metabolic activities is released by the mitochondria in the form of ATP. It also helps in the cellular respiration and formation of the cell.
The origin of mitochondria and chloroplast is described by the endosymbiotic theory. Based on the evolutionary aspect, mitochondria and chloroplast both originated due to endosymbiotic theory.
Inheritance research and forensic science also deal with the discovery of mitochondria. While the corb bark of the plants generally contains dead cells with no nucleus and other membrane-bound cells. So, it does not deal with the discovery of mitochondria.
Therefore, the discovery of mitochondria (mtDNA) had no effect on the study of cork bark. Thus, the correct option is D.
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The study of cork bark had no effect on the mitochondrial DNA (mtDNA).
Further Explanation:
Mitochondria are predominantly present in the eukaryotes. They are not present in single-cell organelles such as RBC (which lacks nucleus). They consist of very small circular mitochondrial DNA. It passes the genetic information from one parent to a new offspring. The DNA of the cytoplasmic organelles is inherited in a non-Mendelian manner. It is generally accepted that mostly in animal cells, mitochondrial DNA is passed on solely by the oocyte of the mitochondria.
Endosymbiotic theory describes the origin of chloroplasts and mitochondria.On the evolutionary basis, mitochondria and chloroplast both originated due to endosymbiotic theory. Barkand corks are an outer component of plants.The bark is mainly made up of cork cambium, cork, cortex, and phelloderm. Cork barks are dead cells of the plant, and their mitochondrial DNA is not involved in metabolic processes.
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Answer Details:
Grade: High School
Subjects: Biology
Chapter: Cell organelle
Keywords:
Mitochondrial DNA, chloroplast, cork, barks, non-Mendelian, oocytes, mitochondria, circular, single-cell, animal cell, RBC, nucleus.
Answer:
osmosis
Explanation:
Answer:
The correct answer is A. Sunlight.
Explanation:
The ocean contains many plants and protists that can make their food, such as phytoplankton. These organisms are photoautotrophs, which means that they need light to photosynthesize, otherwise they would not be able to produce primary production.
Photosynthetic activity of marine organisms depends on luminous intensity, but solar light can only reach up to a certain depth in water, which is not much deeper than the surface. So every photoautotrophic organism must inhabit near the surface to get the necessary energy amount.
Each organism and species can live at different depth levels according to their needs, but all of them are restricted to the surface or near the surface because they need solar light.
B. Electron transport chain
C. Glycolysis