Biology 1407- Exam 1
A farmer makes use of triazine herbicide to manipulate pigweed in his field. For the first few
years, the triazine works properly and nearly all the pigweed dies; however after numerous
years, the farmer sees increasingly pigweed. Which of these factors satisfactory explains
what came about?
A. The herbicide organisation misplaced its triazine formulation and started out selling
negative-best triazine.
B. Natural selection induced the pigweed to mutate, growing a brand new triazine-resistant
species.
C. Triazine-resistant pigweed has less-efficient photosynthesis metabolism.
D. Triazine-resistant weeds have been more likely to live on and reproduce. - ANS-D.
Triazine-resistant weeds had been much more likely to live on and reproduce.
A big seaweed that floats freely at the floor of deep our bodies of water might be predicted to
lack which of the subsequent?
A. Thalli.
B. Bladders.
C. Holdfasts.
D. Gel-forming polysaccharides. - ANS-C. Holdfasts.
A populace of organisms will now not evolve if _____.
A. All character version is due best to environmental elements.
B. The environment is converting at a tremendously gradual rate.
C. The population length is large.
D. The populace lives in a habitat with out competing species present. - ANS-A. All person
variant is due best to environmental factors.
According to the idea of punctuated equilibrium, the "unexpected" look of a brand new
species within the fossil report method that _________.
A. The species is now extinct.
B. Speciation happened in a single era.
C. Speciation befell hastily in geologic time.
D. The species will consequently have a quite quick lifestyles, in comparison with different
species. - ANS-C. Speciation came about unexpectedly in geologic time.
After the drought of 1977, researchers hypothesized that on the Galápagos island Daphne
Major, medium ground finches with large, deep beaks survived higher than people with
smaller beaks due to the fact they could greater effortlessly crack and devour the hard
Tribulus cistoides end result. A tourist corporation units up dependable feeding stations with
an expansion of chicken seeds (different types and sizes) so that tourists can get a better
observe the finches. Which of these activities is now maximum in all likelihood to occur to
finch beaks on this island?
, A. Evolution of but large, deeper beaks over the years, until all birds have especially large,
deep beaks.
B. Evolution of smaller, pointier beaks through the years, till all birds have particularly small,
pointy beaks.
C. Increased version in beak length and form over the years.
D. No exchange in beak size and form over time. - ANS-C. Increased variation in beak
length and form over the years.
All protists are ______.
A. Unicellular.
B. Eukaryotic.
C. Symbionts.
D. Mixotrophic. - ANS-B. Eukaryotic.
An man or woman mixotroph loses its plastids, yet keeps to live on. Which of the subsequent
maximum in all likelihood debts for its persisted survival?
A. It is predicated on photosystems that glide freely in its cytosol.
B. It ought to have won greater mitochondria while it lost its plastids.
C. It engulfs natural material by using phagocytosis or by means of absorption.
D. It has an endospore. - ANS-C. It engulfs organic fabric with the aid of phagocytosis or by
way of absorption.
Arrange the subsequent so as from biggest to smallest, assuming that all of them come from
the identical fungus.
1. Basidiocarp
2. Basidium
three. Basidiospore
4. Mycelium
5. Gill
A. Four → five → 1 → 2 → 3
B. 5 → 1 → 4 → 2 → three
C. Five → 1 → three → 2 → four
D. Four → 1 → 5 → 2 → three - ANS-D. 4 → 1 → five → 2 → three
Arrange the following in order from biggest to smallest.
1. Ascospore
2. Ascocarp
3. Ascomycete
four. Ascus
A. Three → 2 → four → 1
B. 3 → 4 → 1 → 2
C. 2 → 3 → 4 → 1
D. 2 → four → 1 → three - ANS-A. Three → 2 → four → 1
Bacteria perform every of the subsequent ecological roles. Which role generally does NOT
involve symbiosis?
A. Skin commensalist.
B. Decomposer.
A farmer makes use of triazine herbicide to manipulate pigweed in his field. For the first few
years, the triazine works properly and nearly all the pigweed dies; however after numerous
years, the farmer sees increasingly pigweed. Which of these factors satisfactory explains
what came about?
A. The herbicide organisation misplaced its triazine formulation and started out selling
negative-best triazine.
B. Natural selection induced the pigweed to mutate, growing a brand new triazine-resistant
species.
C. Triazine-resistant pigweed has less-efficient photosynthesis metabolism.
D. Triazine-resistant weeds have been more likely to live on and reproduce. - ANS-D.
Triazine-resistant weeds had been much more likely to live on and reproduce.
A big seaweed that floats freely at the floor of deep our bodies of water might be predicted to
lack which of the subsequent?
A. Thalli.
B. Bladders.
C. Holdfasts.
D. Gel-forming polysaccharides. - ANS-C. Holdfasts.
A populace of organisms will now not evolve if _____.
A. All character version is due best to environmental elements.
B. The environment is converting at a tremendously gradual rate.
C. The population length is large.
D. The populace lives in a habitat with out competing species present. - ANS-A. All person
variant is due best to environmental factors.
According to the idea of punctuated equilibrium, the "unexpected" look of a brand new
species within the fossil report method that _________.
A. The species is now extinct.
B. Speciation happened in a single era.
C. Speciation befell hastily in geologic time.
D. The species will consequently have a quite quick lifestyles, in comparison with different
species. - ANS-C. Speciation came about unexpectedly in geologic time.
After the drought of 1977, researchers hypothesized that on the Galápagos island Daphne
Major, medium ground finches with large, deep beaks survived higher than people with
smaller beaks due to the fact they could greater effortlessly crack and devour the hard
Tribulus cistoides end result. A tourist corporation units up dependable feeding stations with
an expansion of chicken seeds (different types and sizes) so that tourists can get a better
observe the finches. Which of these activities is now maximum in all likelihood to occur to
finch beaks on this island?
, A. Evolution of but large, deeper beaks over the years, until all birds have especially large,
deep beaks.
B. Evolution of smaller, pointier beaks through the years, till all birds have particularly small,
pointy beaks.
C. Increased version in beak length and form over the years.
D. No exchange in beak size and form over time. - ANS-C. Increased variation in beak
length and form over the years.
All protists are ______.
A. Unicellular.
B. Eukaryotic.
C. Symbionts.
D. Mixotrophic. - ANS-B. Eukaryotic.
An man or woman mixotroph loses its plastids, yet keeps to live on. Which of the subsequent
maximum in all likelihood debts for its persisted survival?
A. It is predicated on photosystems that glide freely in its cytosol.
B. It ought to have won greater mitochondria while it lost its plastids.
C. It engulfs natural material by using phagocytosis or by means of absorption.
D. It has an endospore. - ANS-C. It engulfs organic fabric with the aid of phagocytosis or by
way of absorption.
Arrange the subsequent so as from biggest to smallest, assuming that all of them come from
the identical fungus.
1. Basidiocarp
2. Basidium
three. Basidiospore
4. Mycelium
5. Gill
A. Four → five → 1 → 2 → 3
B. 5 → 1 → 4 → 2 → three
C. Five → 1 → three → 2 → four
D. Four → 1 → 5 → 2 → three - ANS-D. 4 → 1 → five → 2 → three
Arrange the following in order from biggest to smallest.
1. Ascospore
2. Ascocarp
3. Ascomycete
four. Ascus
A. Three → 2 → four → 1
B. 3 → 4 → 1 → 2
C. 2 → 3 → 4 → 1
D. 2 → four → 1 → three - ANS-A. Three → 2 → four → 1
Bacteria perform every of the subsequent ecological roles. Which role generally does NOT
involve symbiosis?
A. Skin commensalist.
B. Decomposer.
