ANNUAL EXAM. – 2022
XI Science Biology (56) Max. Marks: 70
Date: /04/2022 Time: 3 Hrs.
1.
Question paper consists of 31
questions divided into FOUR sections, namely A, B, C and D.
(1) Section A: Q. No. 1 contains 10 multiple choice
type questions carrying
one mark each.
Q.
No. 2 contains 8 very short answer type questions carrying
one mark each.
(2) Section B: Q No. 3 to Q. No. 14 are 12 short
answer –I type questions
carrying two marks each.
Attempt
any eight questions.
(3) Section C: Q. No. 15 to Q. No. 26 are 12
short answer – II type questions
carrying three marks each.
Attempt
any eight questions.
(4) Section D: Q. No. 27 to Q. No. 31 are 5 long
answer type questions carrying
four marks each.
Attempt
any three questions.
2.
Figures to the right indicate full marks.
3.
Start each section on new page.
4. Evaluation of each MCQ would be done for the first attempt only.
5. Draw neat, labelled diagrams wherever necessary.
SECTION –A
Q.
1. Select and write the correct answer: (10)
(i) The tallest living gymnosperm among
the following is ………………….. .
a) Sequoia
sempervirens
b) Taxodium
mucronatum
c) Zamia pygmaea
d) Ginkgo biloba
(ii) In Ascaris, __________________.
a)
mesoglea is present
b)
endoderm is a discontinuous layer
c)
mesoderm is present in patches
d)
body cavity is absent
(iii) Cell wall is present in ………………….. .
a) Plant cell
b) Prokaryotic cell
c) Algal cell
d) All of the above
(iv)
Glycosidic bond is found in ………………………………..
a) Disaccharide
b) Nucleosides
c) Polysaccharide
d) All of these
(v) For
fixing one molecule of CO2 in Calvin
cycle, are required
a)
3ATP + 1NADPH2
b)
3ATP + 2NADPH2
c)
2ATP + 3NADPH2
d)
3ATP + 3NADPH2
(vi) In Family Solanaceae, leaves are
arranged in ………………………… .
a) alternate phyllotaxy
b) opposite decussate
phyllotaxy
c) whorled phyllotaxy
d) opposite superposed
phyllotaxy
(vii) In plant like Datura, flowers
are …………………... .
a) solitary, bisexual
and actinomorphic
b) solitary, bisexual
and zygomorphic
c) solitary, unisexual
and actinomorphic
d) solitary, unisexual
and zygomorphic
a) valvate
b) imbricate
c) twisted
d) vexillary
(ix) The functional unit of striated
muscle is ……………….. .
a) cross bridges
b) myofibril
c) sarcomere
d) z- band
(x) If stimulation is very rapid and
frequent the muscle does not have time to
relax. It remains in a state of contraction
called ………………..
a) Summation
b) Tetanus
c) Muscular dystrophy
d) Rigor mortis
Q.
2. Answer the following questions: (08)
(i) Name the term used for breaking of
molecules.
(ii) Why Archaebacteria are termed as
extremophiles?
(iii) Fern is a vascular plant. Yet it is not considered
a Phanerogams. Why?
(iv) Why molluscs are economically
important?
(v) What makes outer membrane of
mitochondria permeable to various
metabolites?
(vi) Why squamous epithelium is called
pavement epithelium?
(vii) Write scientific name of American
species of cockroach.
(viii) Expand – NADP
SECTION – B
Attempt
Any Eight of the following questions: (16)
Q.
3. Does reproduction can be considered as all
inclusive property of life?
Explain with examples.
Q.
4. Enlist different pigments found in green and
red algae.
Q. 5. Match the column – I with column – II and rewrite the matching pairs.
Column – I (Phylum) |
Column – II (Characters) |
|
1.
Annelida |
a.
Tube feet |
|
2.
Mollusca |
b.
Radula |
|
3.
Ctenophora |
c.
Parapodia |
|
4.
Echinodermata |
d.
Comb plates |
Q. 6. Using following criteria distinguish between Camel and Snake.
a. Limbs
b. Mammary glands
c. Heart chambers
d. Body temperature
Q.
7. a. Define totipotency.
b. Why a cell is totipotent?
Q.
8. Enlist the postulates of modern cell theory.
Q.
9. Give significance of mitosis.
Q.
10. Is there something wrong in following
schematic presentation? If yes,
correct it so that photosynthesis
will be operated.
Q. 11. a. Define: Photosynthesis
b. Give overall equation of photosynthesis.
Q.
12. Give significance of terminal oxidation.
Q.
13. Define Respiratory Quotient. Explain why
respiratory quotient for
carbohydrate is one?
Q.
14. Explain the process during which the
interaction between actin and myosin
ceases.
SECTION – C
Attempt Any Eight of the following questions: (24)
Q.
15. a. What are Chrysophytes?
b. What is their ecological role?
c. What is the use of diatomaceous
earth?
Q.
16. a. Why bryophytes are called ‘amphibious
plants’?
b. Write about primitive bryophytes.
Q.
17. Observe the following diagram and answer the
questions given below.
a. Identify the type of cell division.
b. Identify the phases.
c. Label ‘A’ and ‘B’.
Q.
18. a. Define the type of cell division exhibited
by germ cells.
b. Enlist its significance.
Q.
19. Nucleic acid is composed of many small basic
units.
a. Name the basic unit of nucleic
acid.
b. Enlist components of basic unit
of nucleic acid
c. What is the difference in them in
DNA and RNA.
Q.
20. Write down and explain the floral formula of
family Solanaceae.
Q.
21. Complete the following table.
|
|
Cell / Tissue / Muscle |
Location |
Function |
|
1. |
Cardiac
muscle |
---------- |
----------- |
|
2. |
----------------- |
Joints |
Prevent
dislocation of bones |
|
3. |
----------------- |
Inner
lining of ovary |
----------- |
|
4. |
Stratified
epithelium |
Epidermis
of skin, |
------------ |
Q.
22. Give systematic position of cockroach.
Q.
23. a. Write about interaction of cockroach with
mankind.
b. Explain chemical control method
of cockroach.
Q.
24. How are glycolysis, TCA cycle and electron
transport chain linked? Explain.
Q.
25. Generally muscles work in pairs and produce
opposite action. Enlist pairs of
such muscles.
Q.
26.
a. Identify the diagram.
b. Label ‘A’, ‘B’ and ‘F’
c. Give function of ‘D’.
SECTION –D
Attempt
Any Three of the following questions: (12)
Q.
27. Give salient features of class Aves.
Q.
28. a. What is cytoplasm?
b. Enlist the components of
cytoplasm.
c. Give functions of cytoplasm.
Q.
29. a. What are secondary metabolites?
b. How do secondary metabolites
useful for mankind?
Q.
30. a. Why the term photophosphorylation is used?
b. Differentiate between cyclic and
non-cyclic photophosphorylation.
c. What is the utility of cyclic and
non-cyclic electron transfer?
Q. 31. Give balance sheet for ATP by aerobic oxidation of 2 glucose molecules.
By - Shri. Deshmukh A. B.
