1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Agata [3.3K]
3 years ago
8

What are the different structures and functions of roots?

Biology
1 answer:
seraphim [82]3 years ago
4 0

Different structures and functions of roots

Explanation:

Roots are the underground descending non-green part of the plant.

Root functions: Anchorages the plant to the soil, absorbs water and nutrients from the soil.

Characteristics: Positively geotropic and hydrotropic, negatively phototropic; does not have nodes, internodes or stems.

Types:  

  • Tap root
  • Adventitious root – fibrous, foliar and true adventitious roots

Structure and functions:  

  • Root cap or Calyptra: Cap-like structure covering the root tip .
  1. Function: protects the meristematic tissues of the root, secretes mucilage which enhances the root tips to grow into the hard soil.
  • Meristematic zone or growing point  sub-terminal behind root cap. These cells are inverted and looks like a dome.
  1. Function – helps in the root growth by adding new cells to the root tip and other basal regions
  • Zone of elongation behind the meristematic zone.
  1. Function – helps in elongation of the root
  • Root hair zone: This is the zone of differentiation where cells differentiate into vascular tissues like phloem, xylem, endodermis, cortex etc.
  1. The main function of root hair is to increase the total surface area of root to facilitate more absorption of water and other nutrients from the soil
  • Zone of maturation: the major and mature portion of a root.
  1. Function  - lateral roots originates from this zone and radial differentiation leads to secondary growth.  
You might be interested in
Lipids are important to living things for all of the following reasons, EXCEPT that they are
Strike441 [17]
ANSWER:

Needed to form cell membranes

I hope I was of help to you :)
6 0
3 years ago
The principle of competitive exclusion means that A) niche subdivision can occur. B) a niche can be shared by two species. C) co
nignag [31]

Answer:

C

Explanation:

When two species share a common niche, then one is bound to exclude the other. This is due to the stiff competition for resources. The species with a slight advantage in acquiring the resources will edge out the other species from the environment. This has been demonstrated by George Gauss using two Paramecium species grown in the same media in the lab. <em> P. aurelia</em> outcompetes <em>P. caudatum</em>

3 0
3 years ago
Greg remembered a recent dream in which his girlfriend suddenly grabbed the wheel of his speeding car. Greg's therapist suggeste
aleksandrvk [35]

Answer:

The given blank can be filled with latent content.

Explanation:

The latent content signifies the hidden meaning of a dream, that is, present behind the dream's literal content. On the basis of Freud, a dream's latent content signifies the hidden psychological meaning of the dream.  

Freud considered that the content of the dreams is associated with fulfillment of wish and recommended that dreams possess two kinds of content. These are latent content and manifest content. The actual literal subject matter of the dream is known as the manifest content, while the underlying significance of these symbols is the latent content.  

7 0
3 years ago
Which type of microscope can produce three-dimensional images of a cell’s surface?
iren [92.7K]
A scanning electron microscope.
6 0
3 years ago
Read 2 more answers
What takes place in a cell’s mitochondria?
nexus9112 [7]
The answer is B because mitochondria supports the respiration that it need to produce.
7 0
3 years ago
Read 2 more answers
Other questions:
  • the area around a cell has a high concentration of sodium ions. As the result, the cell membrane expands and Burts. which proble
    6·2 answers
  • If crossing over did not occur, how could the passing on of physical features be affected?
    10·1 answer
  • Which of the following describes the way heat is transferred in a geyser? Conduction; magma near the surface heats water trapped
    13·2 answers
  • name the one ozone depleting substances which is used as a coolant i the refrigerators and air- conditioning
    8·2 answers
  • Please help me i’m confused
    6·1 answer
  • is Earth an open system or closed system? Explain your answer and provide at least one example that occurred during the Precambr
    14·1 answer
  • Which enzyme functions to prevent supercoiling of the DNA molecule during replication?
    5·2 answers
  • ¿Qué áreas del conocimiento me pueden <br> aportar a la ejecución del proyecto? para un huerto
    8·1 answer
  • By the end of this lab, you will see how some materials diffuse through a semipermeable membrane but others do not. The material
    8·1 answer
  • The feature of earth movement that takes about 26000 years is called
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!