In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:

(1) there is no change in success rate of fertilization

(2) there is high degree of sterility

(3) one can conclude that the plant is apomictic

(4) self fertilization is prevented

Concept Questions :-

General Accounts of Gymnosperms:II
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In which of the following gametophyte is not independent free-living?

1.  Funaria           

2.  Marchantia

3.  Pteris              

4.  Pinus

Concept Questions :-

General Accounts of Gymnosperms:II
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Which one of the following statements is wrong?

(1) Algin and carrageenan are products of algae

(2) Agar-agar is obtained from Gelidium and Gracilaria

(3) Chlorella and Spirulina are used as space food

(4) Mannitol is stored food in Rhodophyceae

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Male gametes are flagellated in

1. Polysiphonia

2. Anabaena

3. Ectocarpus

4. Spirogyra

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The most primitive among the living vascular plants are the

(1) ferns

(2) brown algae

(3) mosses

(4) cycads

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Non flowering plants are included under

(1) cryptogamae

(2) phanerogamae

(3) angiosperms

(4) Both a and b

Concept Questions :-

Clssification System: II
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Chlorophyll present in red algae is

(1) a, d

(2) a, b

(3) a, c

(4) b, c

Concept Questions :-

Rhodophyceae: Red Algae and Importance of Algae
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Shape of chloroplast present in Ulothrix is

(1) cup shaped

(2) girdle shaped

(3) star shaped

(4) diffused type

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This plant is used as a packing material and also forms an excellent fodder for feeding cattle.

(1) Medicago

(2) Pongamia

(3) Cratolaria

(4) All of these

Concept Questions :-

General Account of Angiosperms
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Maximum protein is present in (which is used as food in space)

(1) Chlorella

(2) Scendesmus

(3) Porphyra

(4) Spirulina

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