Which of the following statement is NOT true of symbiosis?
Symbionts must be living
It is an association of 'give and take'
The association may involve two plants
Association between two similar species
Symbionts derive mutual benefit
Correct answer is D
No explanation has been provided for this answer.
Normally any character shown by an organism is due to the effects of
hormones and chromosomes
chromosomes
mutation
hormones and genes
genes and enviroment
Correct answer is E
No explanation has been provided for this answer.
Accommodation of the human eye is best described as the
ability to see distant objects
movement of upper and lower eyelids
focusing of near and distant objects
changing of lens shape due to varying light intensities
constant adjustment of the iris
Correct answer is C
No explanation has been provided for this answer.
In a bakery, yeast is added to flour to make bread rise. This is possible because yeast produces
alcohol
oxygen
carbon dioxide
energy
ethanol
Correct answer is C
No explanation has been provided for this answer.
All the following are digestive enzymes except
bile
lipase
maltase
pepsin
ptyalin
Correct answer is A
No explanation has been provided for this answer.