TRANSITION
{Striving
singularity, Exploring Excellence}
|
B-2
AND 3
Time:
2½ Hours
Max. Marks: 60
CONTROL AND CO-ORDINATION
Q. 1. Why does living organisms show movement?
Q. 3. What happens at the synapse between two
neurons?
Q. 4. What are nastic movements?
Q. 5. Give an example of plant hormone that promotest
growth?
Q. 6. Which signals will get disturbed in case of a
spinal cord injury?
Q. 7. What is the role of brain in reflex action?
Q. 8. Why are some patients of diabetes treated by
giving injections of insulin hormone?
Q. 9. What is the need for a system of control and
co-ordination in an organism?
Q. 10. Differentitate between endocrine gland and
dexocrine gland?
Q. 11. Write some characteristics of hormones of
animals?
Q. 12. Compare and contrast nervous and hormonal
mechanisms for control and co-ordination in the animals?
Q. 13. Give various functions performed by plant
hormones?
Q. 14. What is reflex action and reflex arc? Explain
with the help of examples:
Q. 15. Give the various functions of brain?
Q. 16. What
is the difference between reflex action and walking?
HOW DO ORGANISMS REPRODUCE
Q. 1. Define reproductions?
Q. 2. What is the importance of dna copying in
reproduction?
Q. 3. Where is the male gamete formed in a flowering
plant?
Q. 4. How many male gametes are present in one
pollel-grain?
Q. 5. What is puberty?
Q. 6. What is gestation?
Q. 7. What is fission?
Q. 8. Where the anther contains sepal, ovules and
pollel-grains?
Q. 9. Define vegitative propagation. Name its three
methods of vegetative propagation used by the gardners to grow plants?
Q. 10. What are the advantages of vegetative
propagation?
Q. 11. Why is dna copying an essential part of the
process of reproduction?
Q. 12. How is the process of pollination different
from fertilization?
Q. 13. What are changes seen in the girls at the time
of puberty?
Q. 14. What are the different methods of
contraception?
Q. 15. Distinguish between asexual reproduction and
sexual reproduction?
Q. 16. Describe the menstrual cycle in female?
Q. 17. Why is variation beneficial to the species but
not necessarily for the individual?
Q. 18. How does the embroy get nourishment inside the
mother’s body?
Q. 19. What
are the function performed by the testis in human beings?
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