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 Biology Questions

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Q:

Blood flow to a tissue will increase if the

A) pH rises B) Level of carbon dioxide at the tissue increases
C) Vessels constrict D) Level of oxygen at the tissue increases
 
Answer & Explanation Answer: B) Level of carbon dioxide at the tissue increases

Explanation:

The movement of blood in the body is called blood flow. The blood flows through the vessels, tissues and organs. Blood flow to a tissue will increase if the level of carbon dioxide at the tissue increases.

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3 1708
Q:

The exit of food from the stomach is regulated by a ______ muscle.

A) cardiac B) sphincter
C) skeletal D) No option is correct
 
Answer & Explanation Answer: B) sphincter

Explanation:
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1 1708
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

Explanation:
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2 1706
Q:

Nereis, Pheretima (Earthworm) and Hirudinaria (blood sucking leech) are examples of which Phylum?

A) Coelenterata B) Aschelminthes
C) Annelida D) Arthropoda
 
Answer & Explanation Answer: C) Annelida

Explanation:
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1 1704
Q:

Where the mature sperm are produced?

A) Scrotum B) Vas deferens
C) Prostate gland D) Testes
 
Answer & Explanation Answer: D) Testes

Explanation:
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3 1704
Q:

A US team of scientists has found that the mechanism responsible for the ageing process is located --

A) Inside the face B) Inside the skin
C) Inside the brain D) Inside the heart
 
Answer & Explanation Answer: C) Inside the brain

Explanation:
The US team of scientists found the mechanism in the hypothalamus, which is located deep inside the brain and showed that it is responsible for the ageing process.
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1 1698
Q:

The secretion from the prostate gland enters into the:

A) Kidney B) Ureter
C) Urethra D) Testis
 
Answer & Explanation Answer: C) Urethra

Explanation:
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4 1692
Q:

Kwashiorkor  disease  in  children  is  caused by

A) sufficient carbohydrates but less fats in diet B) sufficient  carbohydrates  and  fats  but deficient proteins in diet
C) sufficient  vitamins  but  deficient  fats  in diet D) sufficient  fats  but  deficient  vitamins  in diet
 
Answer & Explanation Answer: B) sufficient  carbohydrates  and  fats  but deficient proteins in diet

Explanation:

Kwashiorkar is produced by protein deficiency unaccompanied by calorie  deficiency.  It  results  from the  replacement  of  mother’s  milk by a high calorie-low protein diet in a child more than one year in age. Like marasmus, kwashiorkor shows wasting   of   muscles,   thinning   of limbs,  failure  of  growth  and  brain development

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