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Plant Kingdom

Question
CBSEENBI11003123
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Indusium is found in

  • algae

  • ferns

  • moss

  • Cycas

Solution

B.

ferns

Indusium is a membranous structure that covers a group of sporangia below it. It is further differentiated into two parts: Hood (kidney shaped dorsal plate) and short stalk. The sporangia attached with a placenta (swollen base) form group called sorus.

Sorus is covered by a membranous structure not found in group of plants such as algae, bryophyta etc, except, ferns of Pteridophyta.

Some More Questions From Plant Kingdom Chapter

Mention the ploidy of the following: protonemal cell of a moss; primary endosperm nucleus in dicot, leaf cell of a moss; prothallus cell of a ferm; gemma cell in Marchantia; meristem cell of monocot, ovum of a liverwort, and zygote of a fern.

Write a note on economic importance of algae and gymnosperms.

Both gymnosperms and angiosperms bear seeds, then why are they classified separately? 

What is heterospory? Briefly comment on its significance. Give two examples.

Explain briefly the following terms with suitable examples:
(i) protonema
(ii) antheridium
(iii) archegonium
(iv) diplontic
(v) sporophyll
(vi) isogamy

Differentiate between the following:
Red algae and brown algae

Differentiate between the following:
liverworts and moss

Differentiate between the following:
homosporous and heterosporous pteridophyte

Differentiate between the following:
syngamy and triple fusion

How would you distinguish monocots from dicots? 

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