SCIENCE QUIZ - 2

1. What is the correct name of
premature death of cells and living tissue?
(A)Neutrophilia
(B)Necrosis
(C)Neoplasia
(D)Nephrosis
(E)Nephritis

2. Which Gas is filled in Refrigerator?
A. Acetylene
B. Methane
C. Mafron
D. Chloroforocarbon

3. How many chambers of heart are present in mammals?
A) 1
B) 2
C) 3
D) 4

4. Name the process of production of energy in the Sun
A) Radioactivity
B) Nuclear fission
C) Ionization
D) Nuclear fusion

5. Water absorption takes place through
a) Lateral roots
b) Root cap
c) Root hairs
d) Tap root

6. What is the action spectrum of transpiration?
a) Orange and red
b) Green and ultraviolet
c) Blue and red
d) None of these

7. The water potential of pure water at atmospheric pressure is
a) -2.3 bar
b) +2.3 bar
c) Zero bar
d) One bar

8. Which of the following is an anti-transpirant?
a) PMA
b) PAN
c) IAA
d) AUG

9.The hormone which signals the closure of stomata is
a) Auxins
b) Cytokinine
c) Gibberelline
d) Abscisic acid

10. Loss of water from the stomata of leaves are known as
a) Guttation
b) Exudation
c) Transpiration
d) Evaporation

11. Plasmolysis occurs due to
a) Absorption
b) Osmosis
c) Endoosmosis
d) Exosmosis

12. The water readily available to plants for absorption by roots is
a) Gravitational water
b) Capillary water
c) Rain water
d) Hygroscopic water

13.Geostationary orbit is at a height of-
(a) 6 Km
(b) 1000 Km
(c) 3600 Km
(d) 36000 Km

14. " Contours' are lines connectingplaces having-
(a) Equal temperature
(b) Equal pressure
(c) Equal rainfall
(d) Equal height

ANSWERS

1)          2) B       3) D      4) D      5) C
6) C       7) C      8) A      9) D     10) C
11) D     12) B    13) D    14) D