CISCE Board - ICSE Class 9

ICSE Class 9 Biology Core question bank (Biology)

Practice 438 free CISCE Board - ICSE Class 9 Biology - ICSE Class 9 Biology Core questions with answers and step-by-step solutions.

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Q1.

Genetics (Dihybrid Cross): What is the classic Mendelian phenotypic ratio in 'Basic Biology: The Cell as the Basic Unit of Life and Tissues' for an $F_2$ generation?

(A)
$9 : 3 : 3 : 1$ (Basic Biology: The Cell as the Basic Unit of Life and Tissues)
(B)
$3 : 1$
(C)
$1 : 2 : 1$
(D)
$1 : 1 : 1 : 1$
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Q2.

Sense Organs (The Human Eye): In 'Basic Biology: The Cell as the Basic Unit of Life and Tissues', myopia (short-sightedness) is corrected using:

(A)
Concave lens of appropriate focal length (Basic Biology: The Cell as the Basic Unit of Life and Tissues)
(B)
Convex lens
(C)
Cylindrical lens only
(D)
Bifocal lens
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