Biology Questions

Q:

Which of the following represents the pair of sex chromosomes in women?

A) XY B) XX
C) YY D) None of these
 
Answer & Explanation Answer: B) XX

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Q:

The human spinal column is made up of ___ bones.

A) 33 B) 42
C) 44 D) 53
 
Answer & Explanation Answer: A) 33

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Q:

Which of the following is at the second trophic level of a food chain?

A) Grass B) Rats
C) Snake D) Eagle
 
Answer & Explanation Answer: B) Rats

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Q:

The formed elements in the blood are

A) Erythrocytes B) Leucocytes
C) Thrombocytes D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

The formed elements are so named because they are enclosed in a plasma membrane and have a definite structure and shape.

 

The formed elements in the blood are Erythrocytes (RBC's), Leukocytes (WBC's) and Thrombocytes (Platelets).

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Q:

Identify a type of asexual reproduction which involves reproduction through parts of a plant such as roots, stem and leaves?

A) Budding B) Vegetative propagation
C) Fragmentation D) Fission
 
Answer & Explanation Answer: A) Budding

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Q:

Where in the human body can you find the islets of Langerhans?

A) Small intestine B) Pancreas
C) Stomach D) Heart
 
Answer & Explanation Answer: B) Pancreas

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Q:

Which of the following is a nitrogen-fixing bacteria?

A) Salmonella B) Rhizobium
C) E.coli D) Pseudomonas
 
Answer & Explanation Answer: B) Rhizobium

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Q:

Contraction of heart is also known as

A) Systole B) Aristotle
C) Diastole D) Lub
 
Answer & Explanation Answer: A) Systole

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