how are simple tissue different from Complex tissue in plants

Difference between simple tissue and complex tissue :-
Simple tissue :-

1.  simple tissue are made of one type of tissues.
2. Example of these tissue are Parenchyma, Collenchymas, Sclerenchyma.

Complex tissue :-

1. Complex tissue are made of more than one type of tissue.
2. Example of of these tissue are Xylem and phloem

how many types of elements together make up the xylem tissue

Xylem is made of four principal elements :-

1. Tracheids
2. Xylem vessels
3. Xylem fibre
4. Xylem parenchyma

define the term tissue

The group of cells with similar function and origin is called as tissue

diagram of a plant cell

diagram of animal cell

what are the three principal functional areas of a cell

A cell has three principal function area which are following :-

1. Cell membrane - cell membrane is made of lipids and protein. It provides mechanical safety to cell organelles. It covers cytoplasma and nucleus from outer side.
2. Nucleus - the oval or circular structure found in the centre of a cell is called as nucleus. There is a two layered membrane around the nucleus. It is called as nuclear membrane. It separates the cytoplasm.

It is through nuclear membrane that substance of nucleoplasm are transferred.
Main components of nucleus are given below -

• Chromatin - chromatin is found near nuclear membrane in the nucleus. It is like a network of fibrils. It mainly contains DNA.
• Centriole - it contains RNA.

1. Cytoplasma - the remaining part of cell expect nucleus contains a matter called as cytoplasm. It contains different cell organelles. These cell organlless perform different works.

how is a prokaryotic cell different from a Eukaryotic cell

Difference between prokaryotic cell and Eukaryotic cell :-
Prokaryotic cell :-

1.  the size of prokaryotic sale remains small.
2.  the nuclear area contains chromatin only and it is usually called cyton.
3. It has single chromosome.
4. It does not contain membrane-bound cell organlless.

Eukaryotic cell :-

1. The size of Eukaryotic cell usually remail big. 
2. The nuclear area is wale clear and it is surrounded by nuclear membrane.
3. It has more chromosome in pairs.
4. It contains membrane-bound cell  organlless.