| 1. |
The type of pollination carried out by wind is known as : |
1 |
| |
(a) Entomophily
(b) Anemophily
(c) Hydrophily
(d) Ornithophily. |
| 2. |
The family to which Homo sapiens belongs to is : |
1 |
| |
(a) Pongidae
(b) Hyalobatidae
(c) Hominidace
(d) Gorilla |
| 3. |
Which of the following minerals is essential in the
formation
chlorophyll though it is not found in the
constitution of the of chlorophyll ? |
1 |
| |
(a) Iron
(b) Copper
(c) Calcium
d) Zinc. |
| 4. |
Which one of the following carries message
for the synthesis of
protein ? |
1 |
| |
(a) ATP
(b) DNA
(c) m-RNA
(d) NADP. |
| 5. |
In which one of the following is the respiratory
pigment present
in man? |
1 |
| |
(a) Haemocyanin
(b) Haemorythrin
(c) Haemoglobin
(d) Lighaemoglobin |
| 6. |
Define racemose type of infloresence. |
1 |
| 7. |
Write a point of difference between fruit and seed. |
1 |
| 8. |
What is a radial type of vascular bundle? |
1 |
| 9. |
Write two hormones responsible for breaking
dormancy of seeds and
plants. |
½ +1/2 =1 |
| 10. |
Give one example of fluid tissue. |
1 |
| 11. |
Name the enzyme which hydrolyses
starch to maltose during digestion of
food. |
1 |
| 12. |
Define Genetic engineering. |
1 |
| 13. |
Explain the term Plasmid |
1 |
| 14. |
What conclusion could he drawn from
Laderberg's
replica-plating experiment? |
1 |
| 15. |
Differentiate between communicable
disease and degenerative
disease. |
1 |
| 16. |
Draw and label a L.S. of a flower
showing all the four whorls.
|
1+1-2 |
| 17. |
Draw a labeled diagram of synovial joint of man. |
1+1=2 |
| 18. |
State any two important features of Gene. |
1+1=2 |
| 19. |
Explain any two morphological changes
noticed in chromosomal mutation.
|
1+1=2 |
| 20. |
Differentiate between homologous
and analogous organs. |
1+1=2 |
| 21. |
Mention the conditions for the
development of a testtube baby. |
2 |
| 22 |
Why is overpopulation considered a burning
problem in the
developing countries like India? |
1+1=2 |
| 23. |
Explain how do green manures improve
soil fertility and productivity?
|
2 |
| 24. |
How does meristematic tissue differ from
permanent tissue? Give
three points of differences. |
1x3=3 |
| 25. |
You are supplied with Potato, Onion and Ginger
for study. How would you
say that these are
stems but not roots though these are found
underground, Give three points to support your answer. |
1x3=3 |
| 26. |
How does breathing differ from respiration ?
Give three points of
difference. |
1X3-3 |
| 27. |
Draw and label Watson and Crick’s double
helical model of DNA molecule. |
3 |
| 28. |
Any person can become allergic to anything
and at any time of his
life. Explain how ? |
3 |
| 29. |
Give three points of differences between an
artery and a vein in
the circulatory system of blood in man. |
6 |
| 30. |
Mention the main postulates of Darwin's theory of Natural
selection. |
6 |
| 31. |
State the method of fertilization taking place
in an angiosperm. What is
a double fertilization ? |
5+1= 6 |
| 32. |
"The fore-brain is the highest centre for many
sensations and
activities. "Explain why ?
Give reasons to support your answer. |
6 |
