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:

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

1. Pteridophytes

2. Algae

3. Angiosperms

4. Bryophytes

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

Which of the following algae contains mannitol as reserve food material?

Which of the following algae produce Carrageen?

Gemmae are present in:

1. Some Gymnosperms

2. Some Liverworts

3. Mosses

4. Pteridophytes

Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as

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