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A freshwater plant such as water lily can solve the problem of buoyancy by the possession of?

A. aerenchyma tissues B. dissected leaves C. thin cell walls of the epidermis D. water-repelling epidermis Correct Answer: Option A…

3 years ago

The appendicular skeleton is composed of the pectoral girdle?

A. pelvic girdle, fore and hind limbs B. pelvic girdle and fore limbs C. lumbar vertebrae and pelvic girdle D.…

3 years ago

Which of the following is a measure for the control of bilharzia?

A. Cutting low bushes around homes B. Application of molluscicides in water bodies C. Screening windows and doors with mosquito…

3 years ago

People who suck petrol with their mouths run the risk of increasing in their blood the concentration of?

A. iron B. lead C. calcium D. magnesium Correct Answer: Option B - lead Explanation It's discovered that tetraethyl lead…

3 years ago

Which of the following is TRUE of the process of conjugation in Paramecium?

A. Micronucleus disintegrates B. Each ex-conjugant divides only once C. Macro nucleus undergoes division D. Each micronucleus divides twice Correct…

3 years ago

The blood vessel which carries blood from the alimentary canal to the liver is the?

A. hepatic artery B. hepatic vein C. hepatic portal vein D. mesenteric artery Correct Answer: Option C - hepatic portal…

3 years ago

Which of the following food substances will produce a brick-red colour when warmed with Benedict’s solution?

A. Glucose B. Starch C. Egg White D. Maltose Correct Answer: Option A - Glucose Explanation In the laboratory, we…

3 years ago

The villus in the small intestine is significant because it?

A. increases the surface area for absorption B. increases the surface area for digestion C. assists in mixing digested food…

3 years ago

Aged erythrocytes are destroyed in the?

A. pancreas B. liver C. lymph nodes D. kidney Correct Answer: Option B - liver Explanation Together with the spleen,…

3 years ago

In the mammalian respiratory system; exchange of gases occurs in the?

A. lungs B. bronchi C. bronchioles D. alveoli Correct Answer: Option D = alveoli Explanation The alveoli are where the…

3 years ago