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

(1) Volvox

(2) Ulothrix

(3) Ectocarpus

(4) Gracilaria

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

1. Homosporous

2. Heterosporous 

3. Homosorus

4. Heterosorus

Which of the following pairs is of unicellular algae?

 1. Gelidium and Gracilaria

2. Anabaena and Volvox

3. Chlorella and Spirulina

4. Laminaria and Sargassum

Strobili or cones are found in:

1.  Pteris

2.  Marchantia

3.  Equisetum

4.  Salvinia 

Phycoerythrin is the major pigment in :
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae

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 cuticle

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

Pinus seed cannot germinate and establish without fungal association. This is because:

1.  its seeds contain inhibitors that prevent germination.

2.  its embryo is immature.

3.  it has obligate association with mycorrhizae.

4.  it has very hard seed coat.