Plant Kingdom

Independent alternation of generation is found in

• Pteridophyta

• Spermatophyta

• Thallophyta

• Bryophyta

Which of the following groups of plants shows the dominant phase of haploid gametophytic generation?

I. Angiosperms

II. Gymnosperms

III. Horsetails, ferns, club mosses (lycophytes and pteridophytes)

IV. True mosses, liverworts, and hornworts (bryophtyes)

• I only

• I, II, and III

• III and IV

• IV only

Which of the following is not heterosporous?

• Selaginella

• Pinus

• Pteridium

• Cycas

Hydrocolloid algin is obtained

• Phaeophyceae

• Rhodophyceae

• Chlorophyceae

• Xanthophyceae

Identify correct statement regarding Sphagnum.

(i) It is a liverwort.

(ii) It produces peat, used as fuel.

(iii) It is used as packing material for trans-shipment of goods.

• Only (i)

• Both (ii) and (iii)

• Both (i) and (iii)

• All (i), (ii) and (iii)

Select the incorrect feature regarding pteridophytes.

• Their main plant body is differentiated into root stem and leaves.

• They lack vascular tissues

• They could be grown as ornamental plants.

• They include horsetails and ferns.

Read the following statements and select the correct option.

Statement I: Ferns have macrophylls or large sized leaves.

Statement II: The event considered as precursor to the seed habit is observed in heterosporous pteridophytes.

• Only statement I is correct

• Only statement II is correct

• Both statements are correct

• Both statements are incorrect.

Poly-sulphated hydrocolloids are present in the cell wall of

• Volvox

• Gracilaria

• Ectocarpus

• Spirogyra

Read the following statements and select the correct option.

Statement I: Frond is the leaf-like photosynthetic structure present in the filament of brown algae.

Statement II: Filament of brown algae attaches the substratum with the help of stipe structure.

• Only statement I is incorrect.

• Only statement II is incorrect.

• Both statements are incorrect.

• Both statements are correct.

Select the mis-matched pair.

• Gelidium – Synthesis of agar

• Sargassum – Used as food source

• Volvox – Colonial green alga

• Dictyota – Phycoerythrin as the major pigment