Which of the following enables mammals to maintain balance?
Cochlea
Eustucian tube
Ossicle
Semi-circular canal
Tympanic membrane
Correct answer is D
No explanation has been provided for this answer.
Which of the following body characteristics distinguishes Ascaris from Earthworms?
Bilaterally symmetrical
Cylindrical
Segmented
Soft
Unsegmented
Correct answer is C
No explanation has been provided for this answer.
algae
bacteria
ferns
fungi
viruses
Correct answer is D
No explanation has been provided for this answer.
The part of the male reproductive organ where sperm cells are produced is called?
epididymis
penis
seminal vesicle
seminiferous tubules
vas deferens
Correct answer is D
The seminiferous tubules are the site of sperm production.
Which of the following processes converts nitrates in the soil to atmospheric nitrogen?
Denitrification
Lightning
Nitrification
Putrefaction
Rainfall
Correct answer is A
No explanation has been provided for this answer.