Self-study
Before their larvae hatch, each parental pair of . ███████████ ███████ ██████ ███ ███████ ██ █ █████ ██████████ ███████ ███ ███████ ████ █████ ███ ██████ ██████ ████ ███████ ████ █████ █████████ ██████ ████ ███ ████████ █████ ██ ████████ ████████ ██████ █ █████ █████ ████ ███████ ████ ████ ████████ ██████ ██████ ███████ ████ ████ ████████ █████████ ████████ ████████ ███ ██████ ██████ ███ ████████ ███████ ██ ██████ ████ ████ ████ ██████ ███ ███████ ████ ████ █████████ █████ ███
"Surprising" Phenomenon
Why do the larva grow larger and heavier when one parent is present, even though both parents help with feeding by bringing a food source to the larva before they hatch?
Objective
The correct answer should help explain why having one parent present present is better for the larva’s growth than having two parents. Perhaps, for example, having two parents takes away from the amount of food available to the larva, or causes some kind of biological reaction in the larva that inhibits their growth. Or perhaps there’s something about having one parent present that leads larva to eat more.
Analysis by Kevin_Lin
10.
Which one of the following, ██ █████ ████ █████ ██ ███████ ███ ████████ ███ ██████ ████████ ██ ███████ ███████ ███████
a
Two beetles can ████ ███ ████ █ ██████ ███████ ████ ███ █ ██████ ███████
b
Both parents use ███ ███████ ██ █████ ███ ████ ██████ ███ ██ ████ ██ ████ ████ ████ ███ ███████
c
Beetle parents usually ████ █████ ███████ █████ ███████ ██ ████ █████ ██ ██████ ███ ████████ █████████ ███ ███ ██ █████
d
After a week, ███ ██████ ███ ███████ ██ ███████ █████ ███████ ██ ████ ███ ███████ ███████████
e
Two parents can ██████ ███ ███████ ████ ██████ ██ █████ ███████ ██████ ████ █ ██████ ██████ ████