Hereditary and Evolution
(Q.1) Which contributed
to the success of Mendel?
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(a)Qualitative analysis of data
(b) Observation of distinct inherited traits
(c) His knowledge of biology
(d) Consideration of one character at a time
(b) Observation of distinct inherited traits
(c) His knowledge of biology
(d) Consideration of one character at a time
(Q.2) Phenotypic trait
is
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(a) The visible characteristics of an
organism
(b) The genetic constitution of an individual
(c) Gene ratio between individuals
(d) Form the basis of inheritance
(b) The genetic constitution of an individual
(c) Gene ratio between individuals
(d) Form the basis of inheritance
(Q.3) Dominant trait is
one that:
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(a)
decides fate of organism in a population.
(b) is expressed in first filial generation.
(c) appears in the proportion of 1/4 in second filial generation.
(d) qualifies an organism to be the primary consumer.
(b) is expressed in first filial generation.
(c) appears in the proportion of 1/4 in second filial generation.
(d) qualifies an organism to be the primary consumer.
(Q.4) Mendel had
perform his studies on
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(a)
garden Pea
(b) chick pea
(c) cow pea
(d) beans
(b) chick pea
(c) cow pea
(d) beans
(Q.5) Mendelian laws
apply only when-
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(a)
The parents are pure breeding
(b) The characters are linked
(c) One pair of contrasting character is dependent upon other pair
(d) F1 in a monohybrid cross shows two types of individuals
(b) The characters are linked
(c) One pair of contrasting character is dependent upon other pair
(d) F1 in a monohybrid cross shows two types of individuals
(Q.6) Sex chromosomes
may be defined as-
|
(a)
Z-chromosomes
(b) G-chromosomes
(c) D-chromosomes
(d) X-chromosomes
(Q.3) A doctor has prescribed a corrective lens of power + 1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
(b) G-chromosomes
(c) D-chromosomes
(d) X-chromosomes
Light
(Q.1) Magnification
produced by a concave mirror is
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(a) Negative for a real image and
Positive for a virtual image
(b) Only positive
(c) It produces no magnification
(d) Only negative
(b) Only positive
(c) It produces no magnification
(d) Only negative
(Q.2) Radius of
curvature of a spherical mirror (or lens) is
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(a) Half of its focal length
(b) Double of its focal length
(c) Equal to its focal length
(d) There is no relation
(b) Double of its focal length
(c) Equal to its focal length
(d) There is no relation
(Q.3) A doctor has prescribed a corrective lens of power + 1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?
(Q.4) What
is the difference between real and virtual images?
(Q.5)
An object is placed at a distance of 10cm from a convex mirror of focal length
15 cm. Find the position and nature of the image.
(Q.6) Why do we prefer convex mirror as a rear view mirror in vehicles?
(Q7). A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of object. Also find the power of the lens?
