30
Q:

Damage to hearing is caused by sounds which exceed

A) 70 decibels B) 80 decibels
C) 100 decibels D) 120 decibels

Answer:   D) 120 decibels



Explanation:

High frequency sound attacks the tympanic memberance and makes it defective. 120 decibels is too high a pitch to be heard and therefore it impairs the hearing ability.

Subject: Biology
Q:

Insects that transmit diseases are known as

A) Pathogens B) Vectors
C) Drones D) Scalars
 
Answer & Explanation Answer: B) Vectors

Explanation:
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0 12
Q:

The largest gland of the human body is

A) Pancreas B) Thyroid
C) Large Intestine D) Liver
 
Answer & Explanation Answer: D) Liver

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0 14
Q:

How many facial bones are there?

A) 34 B) 24
C) 14 D) 4
 
Answer & Explanation Answer: C) 14

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0 24
Q:

In unicellular organisms, all functions like digestion, respiration and reproduction are performed by a how many cell(s)?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: A) 1

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1 145
Q:

Opposite the micropylar end, is the __________, representing the basal part of the ovule.

A) hilum B) funicle
C) chalaza D) nucellus
 
Answer & Explanation Answer: C) chalaza

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1 98
Q:

Which is the longest bone in human body?

A) febula B) Tibia
C) Stapes D) Femur
 
Answer & Explanation Answer: D) Femur

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2 103
Q:

The body of all complex animals consist of only _______ basic types of tissue(s).

A) 4000 B) 400
C) 40 D) 4
 
Answer & Explanation Answer: D) 4

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2 97
Q:

In a majority of flowering plants, out of the four megaspores, what is the ratio of functional and degenerate megaspores?

A) 2:2 B) 1:3
C) 3:1 D) 4:0
 
Answer & Explanation Answer: B) 1:3

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2 72