Apoenzyme is:

1.	protein	2.	carbohydrate
3.	vitamin	4.	amino acid

Glycogenolysis involves:

1. conversion of sugar into glycogen

2. oxidation of sugar

3. conversion of glycogen into sugar

4. conversion of glycogen into fat

A polygenic inheritance in human beings is:

1. skin colour

2. sickle cell anaemia

3. colour blindness

4. phenylketonuria

Nucleic acid segment tagged with a radioactive molecule is called:

1. clone

2. probe

3. plasmid

4. vector

Powdery mildew of wheat is caused by a species of:

1. Puccinia

2. Erysphe

3. Ustilago

4. Albugo

Nucleic acid is absent in:

1. virus

2. viroid

3. prion

4. mycoplasma

In most fungi, the cell wall is chiefly made of:

1. cellulose

2. chitin

3. protein

4. lipid

Heterocysts are present in:

1. Riccia

2. Ulothrix

3. Albugo

4. Nostoc

Double fertilization occurs in:

1. Riccia

2. Pteridium

3. Cycas

4. Capsella

In Ruscus, the stem is a:

1. phyllode

2. cladode

3. offset

4. sucker