Which of the following algae produce Carrageen?

1.	Red algae	2.	Blue-green algae
3.	Green algae	4.	Brown algae

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

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

Cycas have two cotyledons but are not included in angiosperms because of:

Which one of the following pairs of plants are not seed producers:

1. Fern and Funaria

2. Funaria and Ficus

3. Ficus and Chlamydomonas

4. Punica and Pinus

Sexual reproduction in Spirogyra is an advanced feature because it shows:
1. Different sizes of motile sex organs
2. Same size of motile sex organs
3. Morphologically different sex organs
4. Physiologically differentiated sex organs

A student observed algae with chlorophyll 'a', 'd', and phycoerythrin. It should belong to:

Which of the following plants produces seeds but not flowers:
1. Maize
2. Mint
3. Peepal
4. Pinus

In ferns, Meiosis takes place at the time of:

1. Spore formation

2. Spore germination

3. Gamete formation

4. Antheridia and archegonia formation