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Practice Exam 2
| Question | Answer |
|---|---|
| Which structure does NOT represent a mode of vegetative reproduction? | Seeds |
| ____ combines with water to form carbonic acid in the capillaries. | CO2 |
| How can you distinguish sea urchin gastrula embryos from frog gastrula embryos? | Sea urchins have relatively yolk-poor eggs with similar animal and vegetal poles, whereas frogs have large amounts of yolk distinguishing the vegetal pole from the animal pole. |
| The veins of a leaf consist of * | Vascular cells |
| Early land plants differed from green alga in that the land plant | Had a cuticle |
| In Drosophila, the cells created by cleavage contain different developmental signals from the egg called cytoplasmic | Determinants |
| Several species of sea urchins live close to each other and practice external fertilization. They seldom interbreed because eggs produce chemicals that are only attractive to sperm of their own species. This is an example of a ____ barrier that ____. * | Prezygotic; prevents gamete fusion |
| Which one of the following features is unique to animals? | Movement associated with muscle tissue and nervous tissue |
| Which of these is NOT a method used by ectotherms to affect body temperature? * | Increasing metabolic rate |
| The lungs in birds and mammals both * | Exchange O2 and CO2 with blood in capillaries |
| Unlike primary growth, secondary growth | Involves growth in plant diameter |
| Which tissues are INCORRECTLY matched to their progenitor germ layer? | Endoderm-muscles |
| In fish | Blood flows over the gas exchange surfaces in a direction opposite to the flow of water |
| An adaptation in arthropods that allowed them to colonize land was | The ability to close spiracles to prevent water loss |
| Which of the following is FALSE? | Myoglobin has a lesser affinity for O2 than hemoglobin does |
| Which of the following is NOT a mechanism to prevent polyspermy? | Special proteins inside the egg compare the DNA of different sperm, choosing the most adapted on |
| Of the following features, which is the most widely shared in the animal kingdom? | A body plan with symmetry |
| Plants regulate gas exchange and water loss via * | A guarded stomata |
| Dogs use panting to dissipate excess heat. What part of their brain detects the need for this response and sends the signal to pant? (ooooo neuro question) | Hypothalamus |
| The process of moving water through a plant by transpiration works because water molecules stick to each other with | Hydrogen bonds |
| True segmentation is found in which of the following phyla? | Arthropoda, annelida, chordata |
| The frequency of a particular allele within a population can be changed over time by | Selection |
| Hemoglobin releases ___ in acidic environments | More O2 |
| Many plants devote significant resources to growing colorful, fragrant flowers filled with nectar. What does this illustrate the importance of? | Outcrossing |
| What is the role of cleavage in the early embryo? | Produce many cells |
| ___ do NOT have tidal flow of air* | Birds |
| The hollow crater formed during gastrulation is known as a(n)* | Archenteron |
| A T rex’s closest relative is a | Chicken |
| Birds, like mammals, can regulate their body temperatures within close limits. Therefore, birds and mammals are called | Endothermic |
| The name of the meristem that ultimately gives rise to xylem and phloem is the | Vascular cambium |
| During a drought on the Galapagos islands, finches with larger beaks were able to crack the large tough seeds produced by plants that survived the dry conditions. This is an example of ___ | Directional selection |
| Human fetus hemoglobin | Has a higher affinity for O2 than adult hemoglobin |
| The nutritious flesh of many fruits has the function of | Attracting seed dispersers |
| All blastulas contain a(n) | Hollow blastocoel |
| Which of the following is NOT a fetal membrane? | Endometrium |
| Low body temperature triggers adaptive responses to conserve heat. Once the integrating center detects that body temperature has risen, it will decrease these responses. What does this exemplify? | Negative feedback |
| The uneven distribution of an impermeable solute on either side of a membrane will results in | Osmosis |
| Pure water without applied pressure has a water potential that is equal to | 0.0 MPa |
| A flowering plant may reproduce asexually. When it does so | The progeny are genetically identical to the parent |
| Water moves through a plant by each of the following methods EXCEPT | Through the Casparian strip |
| Structures that have no apparent function but had a function in ancestral species are | Vestigial structures |
| A human recessive trait appears in 1 in 100 births. What frequency of people are homozygous dominant for this trait? | 0.81 |
| Increased CO2 in the bloodstream results in | The rate of respiration increasing |
| As adaptations for flight, the wings of bats and the wings of birds are an example of | Convergent evolution |
| What pattern of cleavage is characteristic of mammals? | Holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass concentrated at one pole |
Created by:
pendleem