TOPIC: SPYROGYRA
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| http://en.wikipedia.org/wiki/File:Spirogyra_cell.jpg |
1. The other name of Spyrogyra is:
a. Silk worm
b. Pond silk
c. Basidiocarp
d. Obelia
Hint:This is because its filament are slippery to touch
2. Cells of Spyrogyra are:
a. longer, broader and spherical
b. thicker, smoother and circular
c. more longer than broader and cylindrical
d. none of these.
3. Spyrogyra is:
a. fresh water green algae
b. marine water microbe
c. all of these
d. none of these.
4. To which Division does Spyrogyra belong to:
a. Thallophyta
b. Pteridophyta
c. Bryophyta
d. None of these
5. The cell wall of Spyrogyra consist of 2 cell wall which are made up of:
a. cellulose and Pectin
b. only Cellulose
c. Chitin and cellulose
d. none of these
6. __________ absorbs water to form slimy, mucilagenous sheath.
a. cellulose
b. chitin
c. cutin
d. pectin
7. A sexual reproduction in Spyrogyra is by __________ and sexual reproduction is by __________.
a. fragmentation and conjugation
b. budding and fragmentation
c. conjugation and budding
d. velum and budding
8. chloroplasts in Spyrogyra are:
a. small and segmented
b. thick and cylindrical
c. flat, spiral and ribbon shaped
d. made up of Cutin
9. Chloroplasts of Spyrogyra contains:
a. Sugar and salts
b. Glycogen
c. Gametes
d. Starch
10. The filaments of Spyrogyra are:
a. Thick and smooth
b. long and multicellular
c. bilaterally segmented
d. unicellular prokaryotic
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| http://www.studentxpress.ie/educ/biology/bio2.gif |
ALL BOLD AND UNDERLINE OPTIONS ARE ANSWERS TO THEIR RESPECTIVE QUESTIONS.
Source: NCERT BOOK
Compiled by: Damandeep Kaur Class IX
For clarification on any answer, please comment below this post.
daman, rest everything is clear and good also but i have a doubt in what is pectin? please help.
ReplyDeletepectin is a substance which makes up the cell wall of spyrogyra (like that of the cellulose).It occurs in abundance in non woody parts of plants.It helps to bind the cell wall together and is also useful for plant growth.
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