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SA2RT
(SUMMATIVE ASSESSMENT II REVISION
TEST)
SHELFORD TUTORIALS
1.
What
is the ultimate source of energy on earth?[1]
2.
What
is the scientific name of the yellow spot?[1]
3.
Define
reflection?[1]
4.
Define
Darwinism?[1]
5.
Yeast
reproduces through budding. (true/false).[1]
6.
Which
functional group does –CHO represents?[1]
7.
What
do you mean by valence electrons of and atom?[1]
8.
What
do you mean by a food web?[1]
9.
Differentiate
between the food web and the food chain?[2]
10. What is the power of
accommodation?[2]
11. Draw a ray diagram of a
concave mirror, when the object is placed at the focus.[2]
12. Draw structures of
1,2-dichloro,pentane and cyclohexane.[2]
13. What is Newlands’ law
of octaves?[2]
14. What is the function of
the vas-defrens and epididymis.[2]
15. Name two ways of
vegetative propagation.[2]
16. Differentiate between
implantation and fertilization in humans?[3]
17. show the difference between the recessive and
the dominant alleles?[3]
18. What do you mean by the
acquired and the inherited traits, which of the following is transferred to the
next generation ? give reason.[3]
19. Draw a well labeled
diagram of the human eye. Or. What are the corrective measures for the
hypermetropia and myopia, describe with figures[3].
20. What are sign
conventions for the convex mirror?[3]
21. A convex mirror used
for rear-view on an automobile has a radius of curvature of 3.00 m. If a bus is
located at 5.00 m from this mirror, find the position, nature and size of the image.[3]
22. Discuss speciation in
brief with the help of an example?[3]
23. A mixture of oxygen and
ethyne is burnt for welding. Can you tell why a mixture of ethyne and air is
not used?[3]
24. What were the
limitations of Döbereiner’s classification?[3]
25. Why should we conserve
forests and wildlife? Suggest some
approaches towards the conservation of forests.[3]
26. Explain why the sky
appears reddish during the time of sunset and sunrise, name the phenomena
responsible for this.[3]
27. Describe the structure
and function of the male reproductive system.[5]
28. How is the equal
genetic contribution of male and female parents ensured in the progeny, also
elaborate how the sex of new individuals are determined.[5]
29. (a) Lithium, sodium, potassium are all metals that
react with water to liberate hydrogen gas. Is there any similarity in the atoms
of these elements?[21/2]
(b) Helium is an unreactive gas and neon is a gas
of extremely low reactivity. What, if anything, do their atoms have in common?[21/2]
30. An object, 4.0 cm in
size, is placed at 25.0 cm in front of a concave mirror of focal length 15.0
cm. At what distance from the mirror should a screen be placed in order to
obtain a sharp image? Find the nature and the size of the image. [5]
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