Which of the following is common to the mosquito, housefly, and blackfly?
they undergo complete metamorphosis
they are parasites of man
their immature stages are aquatic
their adults have two pairs of wings
Correct answer is A
No explanation has been provided for this answer.
An arthropod's exoskeleton shedding process is known as
metamorphosis
instar formation
ecdysis
tagmosis
Correct answer is C
No explanation has been provided for this answer.
The chromosomes of members of the kingdom Monera are within the
nucleoplasm
cytoplasm
nucleus
nucleolus
Correct answer is B
No explanation has been provided for this answer.
A water medium is necessary for fertilization in
fungi
conifers
ferns
angiosperms
Correct answer is C
No explanation has been provided for this answer.
Which of the following has the most primitive respiratory system?
snail
fish
insect
mouse
Correct answer is A
The evolutionary trend of respiratory systems from simple to complex
Diffusion through skin/cell → gills → tracheal tubes → book lungs → lungs
Some groups of snails that live in freshwater respire with gills, while other groups need to reach the surface to breathe air. In addition, some are amphibious and have both gills and a lung. Their lack of organ specificity accounts for their primitive status when it comes to respiration.