Previous Year Paper year:2016 : ICSE-X-Biology

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ICSE-X-Biology

Previous Year Paper year:2016

with Solutions - page 2

#1-c [5]
In each set of terms given below, there is an odd one and cannot be grouped
in the same category to which the other three belong. Identify the odd erm
in each set and name the category to which the remaining three belong.
Example : ovary, Fallopian tube, Ureter, Uterus.
Odd term : Ureter
Category : Parts of female reproductive system.

#1-c-i
Sewage, newspaper, Styrofoam, Hay.
Ans : Odd term: Styrofoam
Category: Biodegradable wastes.

#1-c-ii
Thymine, Cytosine, Adenine, Pepsin.
Ans : Odd term: Pepsin
Category: Nitrogen bases of DNA molecule.

#1-c-iii
Malleus, iris, Stapes, Incus.
Ans : Odd term: Iris
Category: Ear ossicles/Tiny bones present in the middle ear.

#1-c-iv
Cortisone, Somatotropin, Adrenocorticotropic hormone, Vasopression.
Ans : Odd term: Cortisone
Category: Hormones secreted by Pituitary gland.

#1-c-v
Typhoid, Haemophilia, Albinism, Colour blindness.
Ans : Odd term: Typhoid
Category: Sex linked inheritence.

#1-d [5]
Complete the following paragraph by filling in the blanks (i) to (v) with
appropriate words:
(i) _____________ secreted by the (ii) _____________ lobe of the pituitary
gland. If this hormone secretion is reduced, there is an increased
production of urine. This disorder is called (iii) ____________.
Sometimes excess glucose is passed with urine due to hyposecretion of
another hormone called (iv) _____________ leading to the cause of a
disease called (v) ______________.
Ans : (i.) Antidiuretic hormone
(ii.) Posterior
(iii.) Diabetes insipidus
(iv.) Insulin
(v.) Diabetes mellitus

#1-e [5]
State the exact location of the following structures:

#1-e-i
Centromere
Ans : Centromere: Between two chromatids of a chromosome.

#1-e-ii
Chordae tendinae
Ans : Chordae tendinae: At the flaps of the bicuspid and tricuspid valves.

#1-e-iii
Thyroid gland
Ans : Thyroid gland: In front of the neck/lower part of the neck below the larynx.

#1-e-iv
Ciliary body
Ans : Ciliary body: Extension of choroid layer as a muscular ring around the lens.

#1-e-v
Proximal convoluted tubule.
Ans : Proximal Convoluted Tubule: In the cortex of the kidney.

#1-f [5]
Given below is a diagram depicting a defect of the human eye, study the
same and then answer the questions that follow:

#1-f-i
Name the defect shown in the diagram.
Ans : Myopia.