Question

a)what are manure and fertilizers.why are they used in crop field.
b)function pf chromosomes,rer,mithochondria,cell wall,vacuole
c) what do u mean by meristematic tissue.mention different types of meristematic tissue in plants
d)what is nervous tissue

Answer 1

a) because manure increase the soil fertility and fertilizers decrease the soil fertility.

B) functions of Rer- this appear rough du to large number of ribosomes are found on the surface these ribosomes are helpful to synthesise the protein molecules....

functions of Mitochondria- it is also called powerhouse of the cell it is a oval cylindrical shape which is covered by a double membrane the outermost membrane is porous and the inner membrane is deeply folded these fold create a large surface area of ATP molecules mitochondria contain their own DNA and ribosomes...

functions of vacuoles-vacuoles are found in plant and animal cell in animal cells these are small in size but in plant cell these are large in size with dual aspect like structure which store solid or liquid material of the cell in plant cell vacuole provide rigidity to the cell....

C) cells which are capable of cell division form meristematic tissue meristematic tissue are further divided into three types apical meristematic tissue Lateral Meristem tissue intercalary meristematic tissue....

D) nervous tissue is a tissue which is specialised transfer the message with in our body it consists of nerve cell , brain etc.....


Please mark my answer as brainliest......