Zoologists extracted the chemical that the Japanese beetle uses to attract a mate, and used it in a trap to reduce the beetle population. Scientists were using a(n)
A. pesticide.
B. pheromone.
C. enzyme.
D. excretion.
E. hormone.
Answer: B
You might also like to view...
When blood pressure falls the kidney releases the enzyme ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following statements is INCORRECT?
a. Langerhans cells activate the immune system. b. Tactile cells anchor the skin to the body. c. Keratinocytes produce a fibrous protein to protect the epidermis. d. Melanin provides protection against ultraviolet (UV) radiation.
The first recognized vascular plant fossil was derived from the extinct genus ________, which had leafless stems with simple, forked branches of equal size.
A. Lycopodium B. Cooksonia C. Marchantia D. Equisetum E. Spirogyra
Male Drosophila melanogaster accessory gland proteins increase egg production in fe-males. Why does this function represent a case of sexual conflict?
a. It doesn't because increased egg production will also increase a female's fitness. b. It reduces female longevity and the chance of a female to mate with other males. c. It effectively changes the mating system toward a form that is more favora-ble to males. d. It reduces the fertility of female eggs. e. B and C.