Question

1A) Answer the following: 5
a) Fill in the blank and rewrite the complete sentence: Autotrophic organisms
have _______ type of cell structure.
b) Identify the odd one out and write the reason: Ulva, Funaria, Pinus, Pteris
c) Correlate and write in one sentence. Plants ________: Deer: Consumer
d) Identify the statement as true or false and write the reason.: Yeast reproduces
by cell division.
e) Define: Antibiotics
1B) Fill in the blank by choosing the correct option and rewrite the sentence.
5
a) _______ is rich in proteins due to symbiotic association with Rhizobium.
1) Bajra 2) Beans

3) Wheat 4) Castor
b) Energy flow in an ecosystem is__________.
1) Cyclic 2) Balanced 3) Unidirectional 4) thermal
c) Lactobacilli are____________ bacteria
1) aerobic 2) harmful 3) round 4) anaerobic
d) _________ are the amphibians of the plant kingdom.
1) Moss 2) Marsilea 3) Spirogyra 4) Thuja
e) The quantity of energy __________ at every level of energy exchange.
1) increases 2) remains the same 3) decreases 4) disappears
2) Attempt any 5 questions: 10
a) Arrange these organisms according to their trophic levels: Grasshopper, Eagle,
mushroom, grass, snake, frog.
b) Differentiate between gaseous cycle and sedimentary cycle.

c) Write a short note on Penicillin.
d ) Identify the plant and write 2 important characters of it.
e ) Name the processes involved in oxygen cycle.
f ) What is Bioremediation? Give 1 eg.

g) i) If you are offered this food, will you eat?
Why?
Ii) Name the organism growing on the
Bread and state its importance in the
Ecosystem.

3) Attempt any 5 questions:
15

a ) I) Name the process shown by
the green plants.

Ii)In what form carbon is stored in the plants( food)?

Iii)In which process oxygen is taken by plants and
carbondioxide is given out?

b) Identify the plants and write the point of difference between them.

(2 points)

c ) Draw a carbon cycle .
d ) I )Name one harmful bacteria found in the alimentary canal of humans.
II ) Why do they grow in anaerobic conditions?
III ) Name one species of this bacteria.
e ) Explain the cyclic flow of nutrients in an ecosystem.
f )Draw a neat labeled diagram of spirogyra.
To which Sub kingdom and division it belongs?
g )State the 3 important characters of Angiosperms.

4) Attempt any 1 out of 2:
5
a) Make a concept map using the following words: Phanerogams,
Plantae, thallophyta, gymnosperms, monocot, bryophyta, dicot,
pteridophyta, angiosperms, cryptogams.
b ) Answer the following questions based on the picture
Given along side:
I) Which plant’s roots do you think these are?
II) Name the organism that lives in the nodules of the plant.
III) What kind of relationship the bacteria and the plant share?
IV) How does the bacteria help the plant?
V) In what ways the farmers benefit by the use of rhizobia?

Answer 1

Answer:

From which standard it belongs to..........