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Batrachospermum :Origin ,strucutre ,Thallus organisation and reproduction

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                                              Batrachospermum Occurrence:-   (1) Batrachospermum is fresh water alga.    (2) It is found in clear, cool, and running streams.   (3) Deepwater plants are dark violet or reddish in color. But the shallow-water species are olive green.   (4) The intensity of light changes the color of pigments.   (5) The thallus is attached to the substratum. Vegetative structure  (1) The thallus of an adult plant is soft, thick, filamentous.  (2) It is freely branched and gelatinous.   (3) The central axis is made up of a single row of large cells. Whorls of branches of limited growth        are developed on this axis.  (4) These branches are filamentous and dichotomously arranged.  (5) The main axis is corticated. It consists of a row of elongated cylindrical cells....
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Question on Algae -Characterstics ,thallus and reproductive system

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 Questions on Algae    
                  


Q.1. Agar-Agar is obtained from  ?

A. Gelidium

B. Polysiphonia

C. Fucus

D. Lamineria

Ans: A

Q.2. Plants are which is not differentiated into root, stem and leaf are in under ?

A. Pteridophytes

B. Gymnosperms

C. Thallophyta

D. Angiosperms

Ans: C

Q.3. Which are the most primitive group  of  algae is ?

A. BGA

B. Green algae

C. Yellow Algae

D. Red Algae

Ans: A

Q.4. Iodine is obtained from?

A lamineria

B. Ulothrix

C. Spirogyra

D. gelidium

Ans: A

Q.5. Which of the following is advanced group of algae?

A. Cyanophyaecae

B. Rhodophyaecae

C. Chlorophyaecae

D. Phaeophyaecae

Ans : B

Q.6. Which algae is responsible for red-sea ?

A. Trichoderma erytherium

B. chlymdomonas

C. Ulothrix

D. None of these

Ans: A

Q.7. One of the following is present in BGA?
A. Starch

B. Cyanophyacean  granules

C. Any polysaccharides

D. Floridian starch

Ans : B

Q.8. Ability to fix atmospheric nitrogen in ?

A. Leaves of some crops plants

B. Chlorella

C. Some marine Red Algae

D. Some BGA

Ans: D

Q.9. Algae is differ from Riccia and Marchantia ?

A .Multicelluar Body

B. Multicellular sex organ

C. Thalloid Body

D. Pyrenoids in the cell

Ans : C

Q.10. Cephaleoures is ?

A. An epiphytic green algae

B. A parasitic green algae

C. A fresh water Green algae

D. A colourless green algae

Ans : B



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