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
1. | Homosporous | 2. | Heterosporous |
3. | Homosorus | 4. | Heterosorus |
Which of the following algae produce Carrageen?
1. | Red algae | 2. | Blue-green algae |
3. | Green algae | 4. | Brown algae |
Which of the following algae contains mannitol as reserve food material?
1. | Volvox | 2. | Ulothrix |
3. | Ectocarpus | 4. | Gracilaria |
Cycas have two cotyledons but are not included in angiosperms because of:
1. Naked ovules
2. Seeds like monocot
3. Circinate ptyxis
4. Compound leaves
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:
1. | Phaeophyta | 2. | Rhodophyta |
3. | Chlorophyta | 4. | Bacillariophyta |
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