What are the three components of the insect body plan?
a. Head, cephalothorax and walking legs
b. Cephalothorax, walking legs and telson
c. Head, thorax and tail
d. Head, thorax and abdomen
e. Chelicerae, abdomen and telson
d
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Which of the following is a permanent post-translational covalent modification?
A. attachment of a sugar B. disulfide bond formation C. proteolytic processing D. attachment of a lipid E. All of the choices are correct.
Temperate zones ________
A) have the coolest climates on Earth B) have milder climates than the tropics C) are relatively dry D) are concentrated in the polar regions
In humans spermatogenesis and oogenesis differ in a number of ways. Which of the following is NOT one of them?
a. number of functional gametes produced by a single meiosis event b. ploidy of final meiotic products c. timing of meiotic divisions (when they occur in the male/female life cycle) d. number of gametes produced in a given time period e. all of these are differences between human male and female gametogenesis
Explain how the sexual life cycle of flowering plants is adapted to the terrestrial environment.
What will be an ideal response?