Which root part is involved in food storage?
A. dermal tissue
B. ground tissue
C. vascular cylinder
D. root cap
Ans: B. ground tissue
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Which of these is not an example of coevolution between flowers and pollinating bees?
A. Bees have tongues to lap up nectar. B. Some bees are hairy to collect and carry pollen. C. Flowers have ultraviolet markings visible to bees but invisible to most other insects. D. Some flowers are bright red with long tubes to hold nectar. E. Bees have strong preferences for particular types of flowers and remember where the plants are located.
Which of the following statements correctly describes cis-trans isomers?
A) They have variations in arrangement around a double bond. B) They have an asymmetric carbon that makes them mirror images. C) They have the same chemical properties. D) They have different molecular formulas.
Which feature is an evolutionary novelty of hexapods?
A. Antennae B. Mandibles C. Wings D. Jointed appendages E. Chitinous exoskeletons
The anterior cruciate ligament (ACL) is one of the major knee joint ligaments in humans, and damage to this ligament is fairly common in athletes
An ACL tear is most often a sports-related injury but can also result from accidents, falls, and work-related injuries. Most sports-related ACL tears occur when a person pivots or lands from a jump. Based on this information as well as your knowledge of ligaments, which of the following occurs in an athlete who has a torn ACL? A) Rapid firing of all the neurons involved in the affected motor unit B) Instability or weakness of the knee joint C) Inability to relax the quadriceps D) Inability to contract the quadriceps