A prothallus is
1. A structure in pteridophytes formed before the thallus develops
2. A sporophytic free living structure formed in pteridophytes
3. A gametophyte free living structure formed in pteridophytes
4. A primitive structure formed after fertilization in pteriodophytes

Read the following statements (A-E) and answer the question which follows them.

How many of the above statements are correct?
1. Two

2. Three

3. Four

4. One

Which of the following statements is incorrect about gymnosperms?

1. They are heterosporous

2. Male and female gametophytes are free-living

3. Most of them have narrow leaves with thick cuticles

4. Their seeds are not covered

Male and female gametophytes do not have an independent free-living existence in:

1. Pteridophytes

2. Algae

3. Angiosperms

4. Bryophytes

If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

1. Types of pigments present in the cell

2. Nature of stored food materials in the cell

3. Structural organisation of thallus

4. Chemical composition of the cell wall

Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?

Options : 

Examine the figure given below and select the right option giving all the four parts (A, B, C and D) correctly identified:

Floridean starch has structure similar to:
1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose

Green algae do not store food in the form of

1. Protein

2. Starch

3. Oil droplets

4. Glucose

In angiosperms, zygote undergoes

1. Meiosis

2. Mitosis

3. Differentiation

4. Both (2) and (3)