Cryptogams (IFS Botany): Questions 10 - 18 of 25

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Question number: 10

» Cryptogams » Fungi

Appeared in Year: 2014

Essay Question▾

Describe in Detail

What are the different types of flagella found in fungi? (Paper A Section A)

Explanation

  • There are mainly two types of flagella;
Image showing flagella types.

Image Showing Flagella Types.

Based on cilia or hair and fibrils, flagella divided into two parts.

Tinsel type: Flagellum with a large number of hair like outgrowths (cilia) all around its surface.

Whiplash type: A long thread like structure being rigid at the… (143 more words) …

Question number: 11

» Cryptogams » Algae

Appeared in Year: 2014

Essay Question▾

Describe in Detail

What are the pigments that are found in red algae? (Paper A Section A)

Explanation

  • Red algae is also known as Rhodophyta and they are marine plants that live mainly in shallow waters and deep tropical seas and some are live in freshwater.
  • Red algae have no flagella and typically grow attached to a hard surface or on other algae.
 Image showing red algae.

Image Showing Red Algae.

Rhodophyta… (168 more words) …

Question number: 12

» Cryptogams » Bryophytes

Appeared in Year: 2014

Short Answer Question▾

Write in Short

What is the heterotrichous habit of moss protonema growth? (Paper A Section A)

Question number: 13

» Cryptogams » Fungi

Appeared in Year: 2014

Essay Question▾

Describe in Detail

How significant is the parasexuality in Aspergillus? (Paper A Section A)

Explanation

Definition of parasexuality or parasexual cycle:

  • The parasexual cycle is defined as a cycle in which plasmogamy, karyogamy and meiosis take place but not at a specified time or at specified points in the life cycle of an organism.
  • In some fungi true sexual cycle comprising of nuclear fusion and… (175 more words) …

Question number: 14

» Cryptogams » Pteridophytes

Appeared in Year: 2014

Essay Question▾

Describe in Detail

What are the xerophytic and hydrophytic characters found in the rhizome anatomy of Equisetum? (Paper A Section A)

Explanation

Xerophytic characters of Equisetum plant are:

  • Presence of thick coat of cuticle all over the epidermal layer of stem.

  • Photosynthetic stem having chlorenchymatous cortex.

  • Stem behaving as leaves.

  • Presence of small, scale like leaves with limited number of chloroplast.

  • Presence of sunken stomata in groove of stem.

  • Stiff epidermis and… (92 more words) …

Question number: 15

» Cryptogams » Algae

Appeared in Year: 2014

Essay Question▾

Describe in Detail

Comment on the contractile vacuoles in Euglena. (Paper A Section A)

Explanation

Contractile vacuoles:

  • Contractile vacuole is a single vacuole and osmotically collected water and then is reformed by a progressive clotting of smaller vacuoles.
  • Contractile vacuoles protect a cell from absorbing too much water and potentially exploding by excreting excess water.

Contractile vacuoles in Euglena:

  • Euglena is single celled organisms lacking… (228 more words) …

Question number: 16

» Cryptogams » Algae

Appeared in Year: 2014

Short Answer Question▾

Write in Short

Write a brief note on the advantage of diploid carposporophyte generation in red algae. (Paper A Section A)

Question number: 17

» Cryptogams » Bryophytes

Appeared in Year: 2014

Essay Question▾

Describe in Detail

Draw scientifically accurate diagrams of the following and label the parts: L. S. of capsule of Funaria (Paper - 1, Section - B)

Explanation

Image showing L.S. of capsule of Funaria

Image Showing L. S. Of Capsule of Funaria

Capsule is a part of sporophyte and the sporophyte in Funaria is called as sporogonium and is green in colour while is young and become reddish brown at mature.

Funaria capsule:

  • A mature sporogonium or sporophyte of Funaria is borne at the… (191 more words) …

Question number: 18

» Cryptogams » Pteridophytes

Appeared in Year: 2013

Essay Question▾

Describe in Detail

Discuss briefly the following: Importance of Heterospory (Paper 1, Section A)

Explanation

  • Heterospory is the production of spores of two different sizes and sexes by the sporophytes of land plants.
  • The condition of the production of two kinds of dissimilar spores, differing in shape and size in the same species is termed Heterospory.
  • Two types of spore producing structures in heterosporous species… (246 more words) …

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