Page 18 - Biology - XII

Q3. Total numberofplant species , This calculation will help us to
i
Total numberof quadratsstudied
(a) study plant (b) study frequency (c) know density (d) know frequency
Q4. Community means

(a) poly specifi c (b) poly specifi c population
(c) mono specifi c (d) mono specifi c population
Q5. There are
(a) two methods to study population density (b) three methods to study population density

(c) no method to study population density (d) four methods to study population density
Q6. Mortality means

(a) death rate (b) birth rate (c) maturity rate (d) reproductivity rate
Q7. If the frequency of a plant is high, what is your interpretation?
(a) The plant enjoys the environment. (b) The plant is getting protection.

(c) The plant is growing well in the environment. (d) Both (a) and (b)
Q8. Trees are numbered along the main roads in a city. It is
(a) tree density (b) tree frequency (c) tree study (d) tree

Q9. Number of plantspecies presentinQuadrat , When multiplied with 100 will help us to
Total numberof QQuadrats studied
(a) study plant (b) study frequency (c) know density (d) know frequency

Q10. In Quadrat method sampling unit area can be of
(a) square shape (b) rectangle shape (c) circle shape (d) all of the above shapes

Q11. DNA is precipitated in isolation of DNA by the use of
(a) hot isopropane/ethanol (b) cold isopropanol/ethanol Wells DNA bands
(c) ice-cold isopropanol (d) all of these Largest Smallest

Q12. Which material is used in gel for gel electrophoresis in isolation of DNA fragments?
(a) Gel (b) Rose (c) Agarose (d) Agar
Q13. Which one of the following statements is right about the given fi gure?

(a) This is a typical agarose gel electrophoresis process. Wells DNA bands

(b) Large DNA strands are near the walls. Largest Smallest
(c) Small DNA strands are the farthest from the walls. 4
(d) All of these 3
2
Q14. DNA isolation is helpful in crime detection by 1
(a) fi nger printing process

(b) digestion
(c) radiolabelling
(d) PCR amplifi cation

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