Biology Questions

Q:

Which of the following organ does NOT belong to human excretory system?

A) Kidneys B) Ureters
C) Uterus D) Urethra
 
Answer & Explanation Answer: C) Uterus

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Q:

The instrument used to examine a person's digestive tract is called ___.

A) Oscilloscope B) Microscope
C) Endoscope D) Radiograph
 
Answer & Explanation Answer: C) Endoscope

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Q:

Which of the following hormone is not secreted by pituitary gland?

A) Thyroid-stimulating hormone (TSH) B) Prolactin
C) Vasopressin D) Somatostatin
 
Answer & Explanation Answer: D) Somatostatin

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Q:

Which of the following is NOT a characteristic of dicotyledons plants?

A) These plants have a tap root B) These plants have reticulate venation
C) These plants have fibrous roots D) These plants have 2 cotyledons
 
Answer & Explanation Answer: C) These plants have fibrous roots

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Q:

Which one is not the cause of kidney stone formation?

A) Drinking more water B) Diabetic mellitus
C) Taking nuts rich in oxalate D) Eating lot of stone forming foods
 
Answer & Explanation Answer: A) Drinking more water

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Q:

What is the name of the point at which the chromatids are attached in a chromosome?

A) Centrosome B) Centromere
C) Nucleosome D) Gene
 
Answer & Explanation Answer: B) Centromere

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Q:

The most active phagocytic cells among the leukocytes are

A) neutrophils and monocytes B) monocytes and lymphocytes
C) basophils and eosinophils D) lymphocytes and neutrophils
 
Answer & Explanation Answer: A) neutrophils and monocytes

Explanation:

The most active phagocytic cells among the leukocytes (White Blood Cells) are neutrophils and monocytes.

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Q:

The skin, the lining of the mouth, the lining of the blood vessels, lung alveoli and kidney tubules are all made of which type of tissue?

A) Epithelial tissue B) Connective tissue
C) Muscular tissue D) Nervous tissue
 
Answer & Explanation Answer: A) Epithelial tissue

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