Assertion: Specialization ofcells is advantageous for the organism.

Reason : It increases the operational efficiency of an organism.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.

The wall of bacteria is consists of :

• N-acetyl glucosamine

• N-acetyl muramic acid

• both (a) and (b)

• cellulose

A chromosome carrying the centromere at one of the ends is called

• acentric

• submetacentric

• telocentric

• metacentric

If centromere is the middle, the chromosome is called :

• sub-metacentric

• metacentric

• acentric

• telocentric

Which of the following is related to glycosylation of protein?

• Lysosome

• Mitochondrium

• Peroxisome

• Rough endoplasmic reticulum

Cell membrane is made up of:

• protein

• cellulose

• lipids

• lipids, carbohydrates and protein

Plant cell is differ from animal cell because of

• the presence of cell wall and absence of chlorophyll in plant cell

• the presence of cell wall and chlorophyll in plant cell

• the absence of cell wall and presence of chloroplast in animal cell

• the absence of cell wall and presence of chlorophyll in plant cell

DNA remains absent in :

• chloroplast

• nucleus

• peroxysomes

• chromosome

The 'power house' of cell is :

• nucleus

• golgi body

• mitochondria

• chloroplast

Assertion : The number of cells in a multicellular organism is inversely proportional to the size of body.

Reason : All the cells in the biological world are of same size.

• If both assertion and reason are true and reason is the correct explanation of assertion.

• If both the assertion and reason are true but reason is not the correct explanation of assertion.

• If assertion is true but reason is false.

• If both the assertion and reason are false.