Leafy stage develops from the secondary protonema as a
1. Apical bud 

2. Axillary bud

3. Lateral bud

4.  Meristem

The given diagram shows:

Read the following statements.
(a) Gymnosperms are heterosporous.
(b) Bryophytes have well developed vessels and
sieve tubes.
(c) Strobilus is found in the main plant body of
Equisetum.
(d) Antheridia are absent but archegonia are present
in female storobil of gymnosperms.
Choose the correct option.
1. All of these 

2. (a), (c) and (d)

3.  Only (a) 

4. (b) and (c)

Choose the correct statement.

1. Many species of Porphyra, Laminaria and Sargassum and among 70 species of marine algae used as food.

2. Agar is used to grow microbes and in preparations of ice creams and jellies.

3. Algae are useful to man in a variety of ways.

4. All of these.

Assertion: Seeds are formed in Gymnosperms.

Reason: Female gametophyte is retained within megasporangium in Gymnosperms.

Choose the incorrect match from following:-

1.  Cycas-branched stem.

2.  Salvinia-heterosporous sporophyte.

3.  Marchantia-Elaters.

4.  Chlorella-used by space travellers.

Coralloid roots of gymnosperms are/have
1. Irregular and possess large number of roots hairs.
2. Symbiotic association with Rhizobium.
3. Symbiotic association with N₂ - fixing cyanobacteria. 
4. VAM

In pteridophytes, gametophyte that develops in the homosporous species is usually
1. Monoecious and has events, precursor to the seed habit.
2. Dioecious and does not lead to seed habit.
3. Monoecious and does not lead to seed habit. 
4. Dioecious and has events, precursor to the seed habit.

Read the following statements and select the option
with correct statements
(a) In Wolfia, the highly reduced female gametophyte
present within ovule, is embryo sac.
(b) The ploidy level of endosperm in Cycas and
Eucalyptus is triploid.
(c) Azolla is a water fern.
(d) Majority of the red algae are marine with greater
abundance in the warmer areas.
(1) (a) and (b) only         

(2) (b) and (c) only

(3) (a), (b) and (c)

(4) (a), (c) and (d)

Match the classes of pteridophyte given in column-I with their respective members given in column-II

Select the correct answer from the following