The Next Few Questions Refer to the Following Description

question 76

Multiple Choice

The next few questions refer to the following description.
The cycads, a mostly tropical phylum of gymnosperms, evolved about 300 million years ago and were dominant forms during the Age of the Dinosaurs. Though their sperm are flagellated, their ovules are pollinated by beetles. These beetles get nutrition (they eat pollen) and shelter from the microsporophylls. Upon visiting megasporophylls, the beetles transfer pollen to the exposed ovules. In cycads, pollen cones and seed cones are borne on different plants. Cycads synthesize neurotoxins, especially in the seeds, that are effective against most animals, including humans.
-Which feature of cycads distinguishes them from most other gymnosperms?
1) They have exposed ovules.
2) They have flagellated sperm.
3) They are pollinated by animals.

• A) 1 only
• B) 2 only
• C) 3 only
• D) 2 and 3
• E) 1, 2, and 3

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Definitions:

Spongy Urethra

The spongy urethra, part of the male urethra, runs through the penis and is surrounded by spongy tissue that fills with blood during erection.

Corpus Spongiosum

Erectile tissue surrounding the urethra in males, expanding during arousal to prevent urethra closure.

Corpus Cavernosum

Erectile tissue found in the penis and clitoris, which fills with blood to facilitate erection.

Testosterone Production

Testosterone Production involves the synthesis of testosterone, primarily in the testes in males and the ovaries in females, influencing secondary sexual characteristics and libido.