Are perfect flowers really perfect? What will be an ideal response?
No, in the world of biology there is no such thing as perfect. Perfect flowers merely have both male
and female reproductive parts. It would be far more fitting to call them ‘hermaphroditic flowers’ than
perfect flowers.
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A sporophyte is a ____ plant body that grows
by ____ from a ____. a. haploid; mitosis; spore b. diploid; mitosis; spore c. diploid; mitosis; fertilized egg d. diploid; meiosis; fertilized egg e. haploid; mitosis; fertilized egg
A decrease in ________ is indicative of a restrictive pulmonary disease.
A) vital capacity B) minute ventilation C) forced expiratory volume D) tidal volume E) residual volume
What is the role of amylase?
a. converting starches to maltose b. synthesizing nutrients in the body c. buffering the pH of food d. breaking down fatty acids
In Belding's ground squirrels, it is mostly the females that behave altruistically by sounding alarm calls. What is the likely reason for this distinction?
A) Males have smaller vocal cords and are less likely to make sounds. B) Females invest more in foraging and food stores, so they are more defensive. C) Females settle in the area in which they were born, so the alarm is more likely to warn kin. D) The sex ratio is biased. E) Males forage in areas separate from females; therefore, alarm calls are useless.