case /data -based (4 Marks)

Question 14 Marks

The pictures show three types of reproduction in animals.

$10.$ Which of these statements is true$?$
$A.$ Type $1$ reproduction is called binary ission.
$B.$ Type $2$ reproduction produces two non-identical offspring.
$C.$ Type $3$ reproduction involves unequal distribution of genetic materials.
$D.$ Types $1, 2$ and $3$ methods of reproduction involve single parent only

Answer

$10. D.$ Types $1, 2$ and $3$ methods of reproduction involve single parent only.

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Question 24 Marks

The picture shows the life cycle of a moth.

$9.$ What can be concluded from the picture$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Can this be concluded from the picture?	Yes or No
Moth is an oviparous animal.	Yes/No
A moth looks different in each stage of its life cycle.	Yes/No
There are two different stages in the life cycle of a moth.	Yes/No

Answer

$9.$ Yes
Yes
No

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Question 34 Marks

The picture shows the basic parts of a salmon ish sperm.

$7.$ Which part of the sperm helps it to swim in water and reach the egg$?$
$8.$ Which of these animals reproduce by external fertilization?
$A.$ Snake
$B.$ Frog
$C.$ Horse
$D.$ Elephant

Answer

$7.$ Mentions part $Z$ as the response.
$8. B.$ Frog

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Question 44 Marks

The table shows the processes of external fertilisation and internal fertilisation.

External fertilisation	Internal fertilisation
The female releases the eggs (ova) outside its body. The male releases the sperms on the eggs. Fertilisation takes place outside the female body.	The male releases the sperms inside the body of the female. Fertilisation takes place inside the female body.

$6.$ Which of these is true about external fertilization and internal fertilization$?$

	External fertilization	Internal fertilization
$A.$	Both parents are necessary	Both parents are necessary
$B.$	Embryo is not formed	Embryo is formed
$C.$	Involves development of eggshell	Involves development of eggshell
$D.$	Takes place among invertebrates	Takes place among vertebrates

Answer

$6. A.$ Both parents are necessary /both parents are necessary

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Question 54 Marks

The picture shows the relative size of different types of cells between $100\ nm$ and $100\ mm.$

$1$. A mature egg and a sperm unite to form a zygote.
In which part of the female reproductive system does a zygote form$?$
$A. 1$
$B. 2$
$C. 3$
$D. 4$
$2.$ How many eggs are usually released each month by the ovary of a woman$?$
$A.$ One
$B.$ Two
$C.$ Fourteen
$D.$ Twenty-four
$3.$ In which part of the female reproductive system does an embryo implant$?$
$A. 1$
$B. 2$
$C. 3$
$D. 4$
$4.$ Which of these statements is true about a foetus$?$
Circle ‘Yes’ or ‘No’ for the correct response.

Is this statement true about a foetus?	Yes or No
All body parts can be identiied properly	Yes/No
It is covered by a hard shell of protective layers.	Yes/No
It resembles a large ball made of millions of cells.	Yes/No

$5.$ Where does the fertilisation of egg occur in the process of In Vitro Fertilisation $(IVF)?$
$A.$ Ovary
$B.$ Water
$C.$ Uterus
$D.$ Petri dish

Answer

$1. A. 1$
$2. A$. One
$3. B. 2$
$4.$ Yes
No
No
$5. D.$ Petri dish

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Science case /data -based (4 Marks)

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