Consider the following statements regarding brown algae:

I. The pigments are chl a, c and xanthophylls, fucoxanthin

II. Storage food is laminarin and mannitol 

III. The cellulosic cell wall is covered with algin

IV. They have a centrally located vacuole

V. Their photosynthetic organs are called as fronds - leaf like structures

VI. They have pear shaped biflagellate zoospores

VII. They have two unequal laterally attached flagella.

The number of correct statements is

(1) 5

(2) 6

(3) 7

(4) 4

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Consider the following adaptations seen in plants:

I. Lack of cuticle

II. Presence of stomata for exchange of gases

III. Evolution of leaf

IV. Dominance of sporophyte

V. Structural support of vascular tissue

Which of the above adaptations would be required in a plant if it has to be successfully adapted to life on land?

(1) All but I

(2) All but I and III

(3) I, II, III and IV

(4) All

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Identify the incorrect statement regarding mosses:

(1) Leaves are one cell thick except at the midrib and lack stomata

(2) The first gametophyte stage is protonema that is creeping and green

(3) The second stage is the leafy stage, which develops from the secondary protonema as a lateral bud.

(4) Rhizoids are elongated and unicellular

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Consider the following statements regarding bryophytes:

I. Bryophytes are also called amphibians of the plant kingdom because they are depndent on water for sexual reproduction.

II. They play an important role in plant succession on bare rocks.

III. They lack true roots, stem or leaves.

IV. The sex organs in bryophytes are multicelluar.

V. They produce biflagellate zoospres.

VI. Archegonium is flask-shaped and produces a single egg.

The number of corrected statements is

(1) 3

(2) 4

(3) 5

(4) 6

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Evolutionarily, the first terrestrial plants to possess vascular tissues are:

(1) Bryophytes

(2) Pteridophytes

(3) Cycades

(4) Gnetales

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Which of the following statements regarding gymnosperms are correct?

I. Ovules are naked - not enclosed by any ovary wall before fertilisation but seeds that develop after fertilisation are covered.

II. In all living Gymnosperms, sporophyte is dominant over the gametophyte.

III. They are hetrosporous.

IV. The male and female gametophytes do not have an independent existence.

(1) I, II and III

(2) I, III and IV

(3) II, III and IV

(4) I, II, III and IV

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Which of the following algae is likely to be found in the deepest waters?

(a) Green

(b) Brown

(c) Red

(d) All are found at equal depths

Concept Questions :-

Rhodophyceae: Red Algae and Importance of Algae
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Which pair[s] is/are in incorrectly matched?

I. Phaeophyceae - Algin in cell wall

II. Chlorophyceae - Laminarin is stored food

III. Rhodophyceae - 2, unequal, lateral flagella

(1) Only II

(2) Only III

(3) I and II only

(4) II and III only

Concept Questions :-

Chlorophyceae: Green Algae:I
Pheophyceae:Brown Algae
Rhodophyceae: Red Algae and Importance of Algae
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The gemmae produced by some liverworts function as:

(1) A water gathering structure

(2) A light capturing structure

(3) A sexual structure

(4) An asexual structure

Concept Questions :-

Bryophytes (Liverworts)
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All the following differentiate gymnosperms from the higher cryptogams except:

(1) Presence of an independent green gametophyte

(2) development of an ovule

(3) Formation of the pollen tube

(4) Presence of cambium

Concept Questions :-

Gymnosperms: I
General Accounts of Gymnosperms:II
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