AHSEC HS 2nd Year Question Paper 2022 Biology

Totnl nuntber of pnges -12

32T BIOL (BOT-ZOO)

2022
ISIOLOGY
(Theory)
Full Marks : 70
Pass Marks : 21

Time : Three hours

The ligures in the margin indicate lull marks
I for the questiotts.

PAf{T-r (BOTANY)
MARI(S - 35
PageNo. 1-6

PAf<:r-rr (zooLoGY)
MARKS - 35
PageNo. T-aL

lJse separate Ansuser scripts for Part-l (Botany)
and Part-II (Zoology)
Contd.

Part-f (Botany)
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L. What is Plasmid ? 1

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2. Name the piant body where bisexual and both unisexual malc antl female

flowers are present. 1

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3. Write full form of VAM.

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Who proposed Mutation theorY ?

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What is biogas ? 2

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6. Name fzoo antibiotics produced from fungi. 1+1:2

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32T BIOI- (BOT-ZOO) l2)

7. How is DNA isoiated in purified form from a bacterial cell ? z

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What is recombinant DNA ? List thc tools of Genetic Engineering. 2

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8. What is triple fusion ? Name the nuclei involved in the process. 1+'t:2

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What is meant by polyembryony in angiosperm ? Write its importance.

1+1,=2

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9. What is totipotency of the cell ? Write its importance in Plant science.

1,+1,=2

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32T BrOL (BOT-ZOO) t3I Contd.

10. Expiain briefly : (anY tuto) 2+2=4

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O Gene Gun

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(iil Gene Cloning.
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11. Write the scientific names with their utilities of the following plants: r

(any tfuee) (t12+r/2)x!=!

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' rfutrqt frffiD
(n Tobacco
{"11s

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YEfr

Ait Jute
T{i"llt

(it) Coffee
Tfu

32r BroL (Bor-zoo) i4l

12. How do biofertilizers enrich the fertility of the soil ? 2

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13. Describe thi: process clf rJevelopment of female gametophyte in Angiosperm

with suitable diagrar^r. 3

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Explain any tlvee outbreeding devices that flower influence the plants have

developetl to cncourage cross-pollination. 3

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1,4. Write briefly on Modern Svnthetic Theory of Evolution. 4

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Describe the factors involved in the process of organic evolution.

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32T BrOr- (BOr'-ZOO) tsl Contd.

15. Define Biotecl'rnology. Write briefly' on the main aims of biotechnology.
'1+4=5

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Write an accoullt on biotechnological application in meclicine. 5

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v-

32T BrOL (BOT-ZOO) t6I

Part-II (Zoology)
(frftsq<'t 3 ertftFsen)
'7x2=2
1. Fill in the blanks : (any two)
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(n) The main function of interstitial ce11s of seminifcrous tubules
is
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-.
(b) -
proposed that nuclci are the bearers of herirlitary characters.

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(c) The AUG codon is called
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(d) Flephantiasis is caused by --.
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@ Greenhouse effect is mainly cauSed due to --.'--.
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2. Answer anY two : 1.x2=2

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(a) What is 'TemPlate strand' ?

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bzr nrol (Bor-zoo) l7l Contd.

I

(t) Define Test cross.

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@ 14{rat is the function of mitochondria in a sperm ?

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(d) What are 'Transgenic Anirnals' ?

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3. Answer any four:

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(tt) What is Menstrual cycle ? 144rich hormones control the menskual
cycle ?

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(b) What is Point mutation ? Give one example.

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(c) What is Adaptive radiation ? Give one example.

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32T BrOr. (BOT-ZOO) t8l

(cl) Define Ecological pvramid with one example'
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@ Define Endemism. Give one example of endemic animal of Assam'
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(f) what do you mean by replication ? Define semiconservative DNA
' replication.

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2x2=4
4. Write the differences between: (any two)

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e (ffi ?8't)

(n) i{omozygous and Heterozygous
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@) Linkage and Recombination

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k) AneuploidY and PolYPloidY

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(d) Yaccination and Immunisation'
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Contd.
32T BIOL (BOT'-ZOO) tel

Draw a labelled diagram of T.S. of ovary. J

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Draw a labellec1 rJiagram of doubie hericar structure of DNA. J

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What are the sexually transmitted rliseases ? Merltion the various causes

of these diseases. 1+2:3

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Mention the effects of drugs and alcohols. 3

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7. Write the salient features of Human Genome. 3

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Write the various reasons of the loss of Biodiversity. 3

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32T BrOL (BOT-ZOO) [10]

8. Describe the structure and functions of Ecosystem. 5

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f)escribe the regulation of gene exPression in bacterial cell. 5

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9. Describe the various chromosomal disorders.

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Describe about the Pedigree analysis. c

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x-

32r BroL (Bor-zoo) [11 ]

32r BIOL (BOr-ZOO) i 12I 42.