Spore dissemination in some liverworts is aided by:

(1) elaters

(2) indusium

(3) calyptra

(4) peristome teeth

Subtopic:  Bryophytes (Liverworts) |
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If you are asked to classify the various algae into distinct groups, which of the following characters you should choose?

(1) Types of pigments present in the cell

(2) Nature of stored food materials in the cell

(3) Structural organisation of thallus

(4) Chemical composition of the cell wall

Subtopic:  Algae |
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Moss peat is used as a packing material for sending flowers and live plants to distant places because:

(1) it is easily available

(2) it is hygroscopic

(3) it reduces transpiration

(4) it serves as a disinfectant

Subtopic:  Bryophytes |
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Conifers differ from grasses in the :

(1) production of seeds from ovules

(2) lack of xylem tracheids

(3) absence of pollen tubes

(4) formation of endosperm before fertilization

Subtopic:  Gymnosperms: I | General Account of Angiosperms | Gymnosperms |
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In a moss, the sporophyte:

(1) is partially parasitic on the gametophyte

(2) produces gametes that give rise to the gametophyte

(3) arises from a spore produced from the gametophyte

(4) manufactures food for itself, as well as for the gametophyte

Subtopic:  Bryophytes |
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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

Subtopic:  General Accounts of Gymnosperms:II | Gymnosperms |
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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

Subtopic:  Algae |
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Male gametes are flagellated in

1. Polysiphonia

2. Anabaena

3. Ectocarpus

4. Spirogyra

Subtopic:  Algae |
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The most primitive among the living vascular plants are the

(1) ferns

(2) brown algae

(3) mosses

(4) cycads

Subtopic:  Bryophytes |
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Non flowering plants are included under

(1) cryptogamae

(2) phanerogamae

(3) angiosperms

(4) Both a and b

Subtopic:  Clssification System: II | Clssification System |
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