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Biology
31)Bitter taste buds on human tongue lies
	on the tip of the tongue		on the side of the tongue
	on the centre of the tongue		on the back of tongue
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32)Sweet taste buds on human tongue lies
	on the tip of the tongue		on the side of the tongue
	on the centre of the tongue		on the back of tongue
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33)Sour taste buds on human tongue lies
	on the tip of the tongue		on the side of the tongue
	on the centre of the tongue		on the back of tongue
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34)The white components present in excreta of lizards and birds is
	uric acid		urea
	creatinine		calcium
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35)The sex of a child is determined
	6-7 weeks after conception		at the time of fertilization of ovum
	at the time of sperm\'s entry		in the second months of pregnancy
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36)Human body\'s thermostat is
	pituitary gland		thyroid gland
	pineal gland		hypothalamus gland
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37)The sterilization operation of male is called
	spermectomy		hysterotomy
	gametectomy		vasectomy
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38) Which one of the following agents causes birth defects?
	mutagens		teratogens
	absortogens		pathogens
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39)The centre of balance of human body lies in the
	cochlea		semicircular canals
	middle ear bone		cochlea and semicircular canals together
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40)The plants that flower once in their life are called
	monogenic		monogamous
	monocarpic		monomorphic
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41)Plant that has largest flower
	sunflower		Zinnia
	rafflesia		chrysanthemum
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42)Pollination done by insects is called
	entomophily		anemophily
	hydrophily		none of these
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43)Number of chromosome in human body cell
	23		24
	46		48
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44) The universal recipient blood group is
	A+		AB-
	AB+		A-
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45)The universal donor blood group is
	AB		AB-
	O		O-
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