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zlopas [31]
3 years ago
11

Please help!!! Will mark brainliest!!!

Biology
2 answers:
Naddik [55]3 years ago
8 0
Answer b !!!Is correct ^
masha68 [24]3 years ago
5 0

thecorrect  answer is b

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30 points pls help Will give brainlyiest
Minchanka [31]
17, due to the gravitational forces and wind drag placed upon the arrow while it is in motion it will decrease the speed over a certain distance. Thus, resulting in the arrow to drop a little lower in height, hitting the bullseye.
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The primary wave is the slowest wave among the seismic waves true or false​
GrogVix [38]
That statement is true!!!
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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
In a 2 allele system, if the allele frequency for "t " is 0.84 , what is the allele frequency for " T " ?
algol13

Answer:

0.16

Explanation:

0.16 = 1-0.84

they are complementary

3 0
3 years ago
Briefly describe the three main parts of DNA replication? Make sure you
Romashka [77]

Explanation is in the file

tinyurl.com/wpazsebu

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