Biology Questions

Q:

Cerebro spinal fluid protects

A) Heart B) Brain
C) Liver D) Kidney
 
Answer & Explanation Answer: B) Brain

Explanation:
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Q:

Damage to hearing is caused by sounds which exceed

A) 70 decibles B) 80 decibles
C) 100 decibles D) 120 decibles
 
Answer & Explanation Answer: D) 120 decibles

Explanation:

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

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Q:

The meristem which occurs between mature tissues is known as _________meristem.

A) Intercalary B) Primary
C) Lateral D) Apical
 
Answer & Explanation Answer: A) Intercalary

Explanation:
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Q:

Nitrogen Fixation is carried out primarily by

A) Plants B) Humans
C) Consumers D) Bacteria
 
Answer & Explanation Answer: D) Bacteria

Explanation:

The process by which bacteria convert nitrogen gas (N2) into ammonia (NH3) is called Nitrogen Fixation.

 

The conversion of nitrogen from one form to another in the nitrogen cycle is carried out primarily by Nitrogen Fixing Bacteria such as Azotobacter.

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Q:

Which type of simple sugar is found primarily in fruit?

A) Sucrose B) Fructose
C) Maltose D) Lactose
 
Answer & Explanation Answer: B) Fructose

Explanation:

The main simple sugar found in fruit is Fructose. Glucose is found naturally occurring in fruits and other plants. But fructose is sweeter than glucose and can give you more energy. That's why a piece of fruit in the morning will give you more energy than a cup of coffee!

 

Fructose is what gives most fruits that sweet flavor and in combination with the acids present in certain fruits can give a pleasantly tangy flavor.

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Q:

Pressure, pain, and temperature receptors in the skin are

A) Exteroceptors B) Proprioceptors
C) Interoceptors D) Mechanoreceptors
 
Answer & Explanation Answer: A) Exteroceptors

Explanation:
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Q:

Tissue that connects muscle to bone

A) Tendons B) Joint capsule
C) Body fiber D) Ligament
 
Answer & Explanation Answer: A) Tendons

Explanation:

A tendon is a fibrous connective tissue which is Tough, fibrous, cord-like tissue that connects muscle to bone or another structure, such as an eyeball. Tendons help the bone or structure to move.

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Q:

The insects do not have blood pigments because 

A) there is no blood B) blood does not have a respirratory function
C) tissues have pigments D) pigments are elsewhere
 
Answer & Explanation Answer: B) blood does not have a respirratory function

Explanation:

The blood of some invertebrate animals like the earthworm is red due to haemoglobin pigment, but the pigment is dissolved in the plasma. In vertebrates the same pigment is found in the red corpuscles and not in the plasma.

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