Practice Paper 1 (ANS)

Section A  -  MCQ ( 30 x 2m = 60 m)

Qn	Answer		Qn	Answer		Qn	Answer
1	4		11	4		21	1
2	3		12	3		22	2
3	3		13	2		23	2
4	2		14	1		24	1
5	3		15	1		25	4
6	4		16	4		26	2
7	4		17	2		27	2
8	1		18	1		28	3
9	2		19	2		29	3
10	1		20	4		30	2

Section B

Qn			Answers
31	a)		liquid
	b)		solid
32	ai)		150 cm3
	aii)		Air can be compressed (1 m) and has no definite volume (1 m).
	b)		The air in the holes of the sponge can be compressed. (1 m)
33	a)		Both cannot make their own food. (1m) Both need air, food and water to survive. (1m) Both can grow. (1m)
	bi)		The mushroom reproduces from spores but the mouse gives birth to its young alive. (1m)
	ii)		The mouse can move from place to place on its own but the mushroom cannot. (1 m)
34	a)		Seed
	b)		Adult plant
35	a)		Both Animals P and R lay eggs.
	b)		Animal Q has hair on its body but Animal S has feathers               on its body. or Animal Q gives birth to their young alive but Animal S lays eggs.
	c)		Name any mammal that gives birth to young alive.   (1 m)                                  Platypus (0 m)     Spiny anteater (0 m)
36	a)		Waste / faeces / undigested food is removed from the body through Part X.
	b)		gullet, large intestine and anus  (accept any 2)
37	a)		light
	b)		reflected
38	a)		To find out which magnet can attract the paper clip from a greater distance. (1m)    Which magnet has a stronger magnetic force. (½ m)
	b i)		Magnetic force can act at a distance.
	b ii)		Magnets can attract magnetic materials.
39	ai)	The number of batteries used is different (1 m) Or The number of batteries used should be the same. (1 m)
		Or The number of turns should be different so as to investigate how the number of coils affects the strength of the electromagnet  (1m)
	b)	Place the magnetised iron nail near some paper clips (1 m) and observe how many of them are attracted to it. (1 m).
40
	c)	Place Object P nearer to Torch A. or   Bring torch A nearer to Object P  or   Shorten the distance between Torch A and Object P.
41	a)	The temperature would increase / rise. (½ m)
	b)	The liquid / mercury / alcohol in the thermometer (½ m) gains heat from the hands/fingers (½ m) and expand (½ m).
42		A woollen jacket traps air in between the body and the jacket.(1 m)  Air is a bad conductor of heat (½ m)   and does not allow the body heat to pass through it to the surrounding cold air quickly(½ m)   .
43	a)	Leaf / leaves
	b)	Water (1m)  or   mineral salts (1 m)           Minerals   (0 m)
44	a)	P : egg
	b)	Q: pupa
45	a)			Type of edges
	b)			Group A: Leaves with smooth edge (½ m) Group B: Leaves with jagged edge / tooth-edged  (½ m)
	c)			(i)  The stem carries water and minerals salts (½ m) from the roots to the leaves (½ m) and (ii)  carries food made by / from the leaves (½ m)  to the other parts of the plants(½ m)      OR (i)     The stem holds the leaves  (1 m) (ii)    enables them to reach for sunlight (½ m)  to make food. (½ m)