Excretory products in plants responsible for the discoloration of flowers are called__________
alkaloids
tannins
anthocyanins
resins
Correct answer is D
No explanation has been provided for this answer.
The products of tissue respiration are_________
glucose, oxygen, and water
oxygen, water, and energy
glucose, carbon dioxide, and energy
water, carbon dioxide, and energy
Correct answer is D
No explanation has been provided for this answer.
The heart can beat continuously without being fatigued because it is composed of________
skeletal muscles
smooth muscles
cardiac muscles
renal muscles
Correct answer is C
No explanation has been provided for this answer.
Muscle fatigue in the body of an athlete is due to__________
low pH
high oxygen content
accumulation of lactic acid
accumulation of carbonic acid
Correct answer is C
No explanation has been provided for this answer.
Underground storage stems which grow horizontally in the soil are_______
bulbs
runners
rhizomes
corms
Correct answer is C
No explanation has been provided for this answer.