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SAMPLE PAPER
BIOLOGY
SET-I
Time Allowed : 3
Hours
Maximum Marks :
70
General Instructions :
(i) All questions are
compulsory.
(ii) Marks for each question are
indicated against it.
(iii) Q. Nos. 1-11 are very short
answer type carrying one mark each only. answer them in one
word one / one sentences.
(iv) Q. Nos. 12 - 23 are short
answer questions carrying 2 marks each. It is appropriate to answer
them in about 30-50 words.
(v) Q. Nos. 24-28 are short answer
questions carrying 3 marks each.. It is appropriate to answer them
in about 30-50 words.
(vi) Q. Nos. 29-32 are long answer
questions carrying 5 marks each. It is appropriate to answer them in
about 40-100 words.
(vii) Do not unnecessarily make
the answers lengthier than desired. |
| Q.1. |
Define urecotelism
? |
| Q.2. |
Name the enzyme which can break
and reseal the strand of DNA ? |
| Q.3. |
Differentiate between the
molecular structure of chlorophyll-a and chlorophyll-b.
|
| Q.4. |
Name the term for the phenomena by
which isolated DNA from one type can induce some properties of the
donor to the recipient. |
| Q.5. |
What is cytoplasmic inheritance
? |
| Q.6. |
Give the significance of Miller
and Urey's experiment. |
| Q.7. |
If you get 4cm piece of woody
flowering plant how will you decide anatomically whether it is a
root or stem ? Give two reasons. |
| Q.8. |
Why dogs are used in crime
detection ? |
| Q.9. |
What is hypanthodium ? Give one
example. |
| Q.10. |
What is a fossil give one example
of a fossil which is a connecting link between reptiles and birds.
|
| Q.11. |
How does skin acts as first line
of defence ? |
| Q.12. |
Give four difference between
compound leaf and young branch bearing simple leaves ?
|
| Q.13. |
What are the four conditions
necessary for efficient gaseous exchange between organism and
environment ? |
| Q.14. |
Differentiate between introns and
exons. |
| Q.15. |
What coacervates ? How do they
grow in size ? |
| Q.16. |
How does mycorrhizae help in
increasing the crop yield. |
| Q.17. |
A diploid cell having 46
chromosomes produces two types of gametes one having 22 chromosomes
and other having 24 chromosomes. What phenomenon might have
taken place ? How does it happen ? |
| Q.18. |
Classify the following into
analogous and homologus. (a) Trunk of an elephant and hand
of chimpanzee
(b) Wing of a bat and wing of an
insect.
(c) Tendril of pea and spines of
cactus.
(d) Nails of human being and claw
in animals. |
| Q.19. |
Give three important functions of
lymph. |
| Q.20. |
What is test cross ? What is its
significance ? |
| Q.21. |
Explain Lamarck's theory of
evolution ? |
| Q.22. |
Describe the role of potassium
ions K+ in the opening and closing
to stomata. |
| Q.23. |
Explain three scientific methods
of birth control. |
| Q.24. |
Why are plants that consume more
than usual 18 ATP to produce one molecule of glucose favoured in
tropical regions ? |
| Q.25. |
In what form and why are many
proteases released in inaactive form ? Name the three intestinal
enzyme involved in protein digestion ? |
| Q.26. |
Why do men suffer from haemophilia
and colour blindness ? Under what condition women suffer from these
disorders ? |
| Q.27. |
Draw a labelled diagram of a
compound stomach of a ruminant showing the path of food through it ?
|
| Q.28. |
Draw a longitudinal section of a
pistil showing pollen germination. Explain the events in the
embryo sac during the process of fertilization. |
| Q.29. |
Describe various phases of
menstrural cycle emphasing the role of harmones. What is the
period when there is maximum chances of conception ?
|
| Q.30. |
How will you prove with the help
of an experiment that DNA replication is semi conservative
? |
