Find out the incorrect statement about the Rhodophyceae.

1. Majority are marine with greater concentrations found in the warmer areas.

2. They are also found at great depths of oceans where relatively little light penetrates.

3. Usually reproduce vegetatively by fragmentation.

4. They reproduce asexually by biflagellate zoospores.

Read the following statement and find out the incorrect statement.

1. Algae usually reproduce vegetatively by fragmentation, asexually by formation of different types of spores and sexually by formation of gametes.

2. Algae are classified into three classes, pteridophytes into four classes and antiosperms into two classes.

3. Algae are chlorophyll bearing simple, thalloid, autotrophic and largely aquatic organisms.

4. The plant body of algae is more differentiated than that of bryophytes.

Which of the following is/are correct for gymnosperms?

(i)      They are heterosporous.

(ii)     They are the first vascular plants.

(iii)    They possess fruits.

(iv)    They require water for fertilisation.

1. Only (i)

2. (i) and (ii)

3. (ii) and (iii)

4. (i), (ii), (iii) and (iv)

The spreading of living pteridophyte is limited and is restricted to narrow geographical region because of

1. Growth requirements of gametophyte (cool, damp and shady places).

2. Requirement of water for fertilisation.

3. Absence of stomata in leaf and absence of vascular tissue.

4. Both 1. and 2..

Artificial systems gave equal weightage to

1. Morphological and anatomical characters.

2. Vegetative and sexual characters.

3. Vegetative and anatomical characters.

4. Morphological and sexual characters.

According to phylogenetic classification organisms belonging to same taxa

1. Are same in anatomy.

2. Have same genetic constituent.

3. Have a common ancestor.

4. Have all characteristics same.

Cell wall of green algae is made up of

1. Inner layer of chitin and outer layer of pectose.

2. Inner layer of cutin and outer layer of pectin.

3. Inner layer of pectose and outer layer of cellulose.

4. Inner layers of cellulose and outer layer of pectose.

In chlorophyceae and phaeophyceae, the type of sexual reproduction is

1.Isogamous

2.Anisogamous

3.Oogamous

4. All of the above

In Phaeophyceae, the spores (zoospores) are

1. Pyriform and bear 2 flagella (one longitudinal and other transverse).

2. Pear-shaped and bear 2 flagella that are laterally attached.

3. Pyriform and bear 2-8, equal and apial flagella.

4. Pear-shaped and bear 2-8, equal and apical flagella.

Leafy stage develops from the secondary protonema as a

1. Apical bud

2. Axillary bud

3.Lateral bud

4. Meristem