case /data -based (4 Marks)

Questions

Question 14 Marks

Diabetes is a condition in which the blood sugar level of a person rises above the normal level.
The table below shows the average range of blood sugar levels at fasting.

	Low blood sugar level	Normal blood sugar level	High blood sugar level (diabetes)
Blood sugar level at fasting	below $70$ mg/dL	$70 – 120$ mg/dL	above $120$ mg/dL

Doctors prescribe insulin injection for patients with high blood sugar levels. However, glucagon is injected in an emergency if the blood sugar level of a person drops too low.
$9.$ Which of these is true about the gland secreting insulin in the human body$?$
$A.$ It has no ducts.
$B.$ It is located on the skin.
$C.$ It controls the function of all other glands.
$D.$ It releases hormones that help in growth.
$10. $ Under what conditions of blood sugar level is glucagon likely to be injected$?$
$A.$ below $60$ mg/dL
$B. 80–100$ mg/dL
$C. 100–120$ mg/dL
$D.$ above $120$ mg/dL

Answer

$9. A.$ It has no ducts
$10. A.$ Below $60$ mg/dL

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Question 24 Marks

Heights of students of four different sections of Grade $8$ are measured. The table shows the
percentage of maximum height up to which the students in each section have grown

Section	Girls	Boys
$A$	$80\%$	$75\%$
$B$	$100\%$	$100\%$
$C$	$92\%$	$85\%$
$D$	$100\%$	$98\%$

$4.$ In which class have both the boys and the girls reached the end of puberty$?$
$A.$ Section $A$
$B.$ Section $B$
$C.$ Section $C$
$D.$ Section $D$
$5.$ What can be concluded from the table$?$
$A.$ Girls are taller than boys in all four classes.
$B.$ Girls attain their maximum height earlier than boys.
$C.$ Girls grow faster than boys throughout their childhood.
$D.$ Girls and boys attain their maximum height at the same age.
$6.$ What is the legal age for marriage in India$?$
$A. 16$ years for a girl and $18$ years for a boy
$B. 18$ years for a girl and $18$ years for a boy
$C. 18$ years for a girl and $21$ years for a boy
$D. 21$ years for a girl and $21$ years for a boy
$7.$ Why should syringes be disposed of carefully after use$?$
$8.$ Under which condition does metamorphosis take place$?$
$A.$ Females are twice the size of males.
$B.$ Young ones look different from adults.
$C.$ Young ones eat the same food as adults.
$D.$ Females are bright-coloured while males are dull.

Answer

$4. B.$ Class $X$
$5. B.$ Girls attain their maximum height earlier than boys.
$6. D. 21$ years for a girl and $21$ years for a boy.
$7.$ Mentions that used syringes may contain traces of blood infected with virus or bacteria.
$8. B.$ Young ones look different from adults

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Question 34 Marks

An ovum contains one $X$ chromosome.
A sperm contains an $X$ or a $Y$ chromosome.
A sperm can fertilize an ovum to produce two different zygotes.

$1.$ Which chromosome does the female zygote receive from the mother and the father$?$

	Mother	Father
$A.$	$X$ chromosome	$Y$ chromosome
$B.$	$Y$ chromosome	$X$ chromosome
$C.$	$X$ chromosome	$X$ chromosome
$D.$	$Y$ chromosome	$Y$ chromosome

$2.$ In which body part of a woman does a fertilized ovum get embedded$?$
$3.$ Which of these statements is supported by the picture$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Is this Statement Supported by the Picture$?$	Yes or No
The father’s sperm decides the gender of the zygote.	Yes/No
The $Y$ chromosome is shorter than the $X$ chromosome.	Yes/No
An ovum unites with two sperms at a time	Yes/No

Answer

$1. C. X$ chromosome, $X$ chromosome
$2.$ Mentions uterus as the answer
$3.$ Yes
Yes
No

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Science case /data -based (4 Marks)

case /data -based (4 Marks)

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