Answer:
Posterior column mediates a pathway called as posterior column medial lemniscus pathway in central nervous which is responsible for mediating certain sensations like touch, vibration etc. Damage to the left posterior column unable to transmit signals to the primary somatosensory cortex in the gyrus and parietal  lobe of the brain.
Explanation:
- The spinal cord and cerebrum is connected by some specialized tract called as white matter tract. These tracts are either ascending or descending.
- The another name of ascending pathway is known as medial lemniscus pathway.
- The origin of this pathway takes place within posterior column of the spinal cord.
- Posterior column medial lemniscus pathway is important as it transmit signals to the cerebrum which is responsible for generating impulse like vibration, touch etc.
- Thus damage to this column can't be able to transmit signals to different parts of cerebrum and thus impulse like touch, vibration,pressure etc will not generate.
 
        
             
        
        
        
Answer AND Explanation:
Gnetophytes are gymnosperms
, they are woody  and the embryo has two cotyledons
. Cycads are woody plants that produce seeds found in Subtropical and warm temperate regions and also they produce motile sperm cells.
 
        
             
        
        
        
<span>The more thermal energy a substance has, the more warmer it will be. So when the temperature is high, there is a lot of thermal energy </span>
Thermal energy is just energy. It refers to the energy of the molecules. Temperature is just a measurement
        
             
        
        
        
Answer:
1. Number of DNA molecules after 30 Cycles of PCR = 1.02 x 10^9
2. No. of mutant DNA molecules = 1.07 x 10^9
Explanation:
1. You just have to take the exponential of 2 to the power of the number of PCR cycles (2^n)
2. All copies were normal at cycle 10 that are about 1024 copies. At cycle 11 single point error, all further copies are mutated.
 
        
             
        
        
        
Answer:
Option B,  hectoliters
 hectoliters
Explanation:
As we know that in one hectoliter there are ten decaliters
 hectoliter
 hectoliter  decaliters
 decaliters
or 
 decaliters
  decaliters  hectoliter
 hectoliter 
For converting any small unit into a large unit it is to be divided by number of units in large unit. 
Thus, 
 decaliters  in terms of hectoliter is equal to
  decaliters  in terms of hectoliter is equal to 

Hence, option B is correct