| Home | E-mail | Cactuspedia | Mail Sale Catalogue | Links | Information | Search  |

 
 
 
Male  Biology  ]

Dictionary of botanic terminology - index of names

 
     
  Relating to, or designating the sex of an organism (of plant or animal), or a part of an organism, which produces gametes (spermatozoa) that can fertilize female gametes (ova). Consisting of members of this sex  
     
A male individual is a member of the sex that perform the fertilizing function in  generation and cannot reproduce without sexual intercourse with a female.
The male produce offsprings by fertilizing the female ova with the sperm.

The "sperm" is defined as the smaller gamete in a heterogamous reproduction system, while the larger gamete is produced by the female.

Male Symbol:

A common symbol used to represent the male gender is the Mars symbol,  a circle with an arrow pointing northeast. This is a stylized representation of the Roman god Mars' shield and spear.
 
     
Male  [ Botany   ]

     
  In botany the term male relate to organs, such as anthers and antheridia, that produce gametes capable of fertilizing those produced by female organs.  
     
See also:  
Male flowers (= staminate) a flower bearing stamens but not pistils;
Male plant: A plant having only staminate flowers
(see:  dioecious )
     

 


Advertising



 

 

1


 
 
 
Holdfast roots  [ Botany  ]

Dictionary of botanic terminology - index of names

 
     
  Some species of climbing plants develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place.  
     
Climbing plants, like the poison ivy (Toxicodendron radicans), Boston ivy (Parthenocissus tricuspidata), and trumpet creeper (Campsis radicans),  develop holdfast roots which help to support the vines on trees, walls, and rocks. By forcing their way into minute pores and crevices, they hold the plant firmly in place. Usually the Holdfast roots die at the end of the first season, but in some species they are perennial. In the tropics some of the large climbing plants have hold-fast roots by which they attach themselves, and long, cord-like roots that extend downward through the air and may lengthen and branch for several years until they strike the soil and become absorbent roots.

Major references and further lectures:
1) E. N. Transeau “General Botany” Discovery Publishing House, 1994
     

 

 

 

| Home | E-mail | Cactuspedia | Mail Sale Catalogue | Links | Information | Search  |