Biology Questions

The central nervous system CNS is responsible for integrating sensory information and responding accordingly.

It consists of two main components::

 1. The brain

 2. The spinal cord

The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement. The brain can be divided into four main lobes: temporal, parietal, occipital and frontal.

The spinal cord serves as a conduit for signals between the brain and the rest of the body.

A cell undergo meiosis, and it produces 4 haploid cells from a single diploid cell.

Hence, the given statement is true.

Mitochondria is the Organelle in which Cellular Respiration Occur.

Genes : The DNA is the genetic material. The DNA is made of several nucleotides. A nucleotide means, one nitrogenous base one sugar molecule and a phosphate molecule. These nucleotides occur in sequences and several nucleotides form one Gene ( a functional mgene is called a cistron)

tRNA abbreviated as A transfer RNA is an adaptor molecule composed of RNA, typically 76 to 90 nucleotides in length, that serves as the physical link between the mRNA and the amino acid sequence of proteins.

Plants grow in size both in height and in girth. Enlargement of cells already present cannnot contribute much to the growth. Only addition of more and more cells could increase the size of the plant considerably.