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Genrish500 [490]
3 years ago
6

Animals in the higher trophic levels generally share two characteristics. They are typically

Biology
1 answer:
Likurg_2 [28]3 years ago
5 0
I think the answers are curious and larger in groups.
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What is the advantage of spicules to a loosely constructed animal such as sponge?
AnnyKZ [126]
<span>The spicules have an important purpose for loosely constructed animal such as sponge. First of all, spicules give structure which is vital due to loose construction. Secondly, it protects from predators. This is similar to porcupine quills in serving to protect.</span>
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3 years ago
Which is a point mutation
pashok25 [27]

A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a sequence of DNA or RNA. Point mutations have a variety of effects on the downstream protein product—consequences that are moderately predictable based upon the specifics of the mutation.

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6 0
2 years ago
Which organ of the digestive system does not directly contact food?
Softa [21]

pancreas

Explanation:

In addition to the GI tract, there are digestion accessory organs (salivary glands, pancreas, gallbladder, and liver) that play an integral role in digestion. The accessory organs do not come directly in contact with food or digestive content.

7 0
3 years ago
What are the different structures and functions of roots?
seraphim [82]

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.  
4 0
3 years ago
Help fast plz!!!
omeli [17]

Answer:

d) The frequencies of the alleles for dark wing color in the moth population

changed.

6 0
2 years ago
Read 2 more answers
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