Which of the following phenomena affects plants growth in an alkaline soil?
Excessive plasmolysis
Excessive transpiration
Excessive sunlight
Poor drainage
Correct answer is D
No explanation has been provided for this answer.
I and II only
I and III only
I, II and III only
I, II and IV only
II, III and IV only
Correct answer is C
No explanation has been provided for this answer.
Ecological investigation in a habitat includes the following procedures except
choosing a habitat
identification of specimens
determining the genetic makeup of specimens
measuring abiotic and biotic factors
Correct answer is C
No explanation has been provided for this answer.
A major reason why the red blood cells can survive in the blood is that the
blood plasma and the red blood cells are isotonic
red blood cells are hypotonic to the plasma
the red blood cells are hypertonic to the blood plasma
the red blood cells receive digested nutrients
Correct answer is A
No explanation has been provided for this answer.
Which of these factors does not cause a change in demand?
Income
Taste and fashion
Population
Price of other commodities
Price of the commodity concerned
Correct answer is E
A change in demand means a change in consumers' desire to purchase a particular good or service, irrespective of a change in its price.
The following are the factors affecting a change in demand
From the above explanation, the price of the commodity does not affect the willingness of the consumer to purchase the commodity, hence option E is the correct option.