BIO 112 Exam 3 Verified Exam Questions and Answers Latest update
2026/2027
Question:
Use the following description to answer the question. A biology student hiking in a forest happens
upon an erect, 15-centimeter-tall plant that bears microphylls and a strobili at its tallest point, with
developing ovules that are naked. When disturbed, the strobili emits a dense cloud of brownish dust. A
pocket magnifying glass reveals the dust to be composed of tiny spheres with a high oil content.
Answer:
Phylum Gentophyta
Question:
The student has probably found a tree that belongs to ___ _.
Answer:
Question:
Use the following information to answer the question. Big Bend National Park in Texas is mostly
Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon
when hiking in this extremely arid zone to encounter many types of plants. One such plant is is a tall
and vascular plant that produce sperms that are flagellated
Answer:
Ginkgophyte or Cycadophyte
Question:
If you found this plans, it most likely to be ______
Answer:
Question:
Suppose an efficient conducting system evolved in a moss that could transport water and other
materials as high as a tall tree. Which of the following statements about "trees" of such a species
would be accurate?
Answer:
Individuals would probably compete more effectively for access to light and have better growth.
, Question:
Which of the following statements regarding megaspores in seed (flowering) plants is correct?
Answer:
It grows into female gametophytes.
Question:
Which of the following statements regarding seed plants is correct?
Answer:
Seed plants are heterosporous.
Question:
Which of the following features of how seedless land plants get sperm to the egg are the same for
some of their algal ancestors?
Answer:
Flagellated sperm swim to the eggs in a water drop.
Question:
The most direct ancestors of land plants were probably____.
Answer:
green algae
Question:
About 450 million years ago, the terrestrial landscape on Earth would have___ _.
Answer:
had non-vascular, green plants similar to liverworts forming green mats on rock.
Question:
What evidence do paleobotanists look for that indicates the movement of plants from water to land?
Answer:
waxy cuticle to decrease evaporation from leaves
Question:
You find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery
organism is most likely a plant and not an alga if it _.
Answer:
Is surrounded by a cuticle
2026/2027
Question:
Use the following description to answer the question. A biology student hiking in a forest happens
upon an erect, 15-centimeter-tall plant that bears microphylls and a strobili at its tallest point, with
developing ovules that are naked. When disturbed, the strobili emits a dense cloud of brownish dust. A
pocket magnifying glass reveals the dust to be composed of tiny spheres with a high oil content.
Answer:
Phylum Gentophyta
Question:
The student has probably found a tree that belongs to ___ _.
Answer:
Question:
Use the following information to answer the question. Big Bend National Park in Texas is mostly
Chihuahuan desert, where rainfall averages about 25 centimeters per year. Yet, it is not uncommon
when hiking in this extremely arid zone to encounter many types of plants. One such plant is is a tall
and vascular plant that produce sperms that are flagellated
Answer:
Ginkgophyte or Cycadophyte
Question:
If you found this plans, it most likely to be ______
Answer:
Question:
Suppose an efficient conducting system evolved in a moss that could transport water and other
materials as high as a tall tree. Which of the following statements about "trees" of such a species
would be accurate?
Answer:
Individuals would probably compete more effectively for access to light and have better growth.
, Question:
Which of the following statements regarding megaspores in seed (flowering) plants is correct?
Answer:
It grows into female gametophytes.
Question:
Which of the following statements regarding seed plants is correct?
Answer:
Seed plants are heterosporous.
Question:
Which of the following features of how seedless land plants get sperm to the egg are the same for
some of their algal ancestors?
Answer:
Flagellated sperm swim to the eggs in a water drop.
Question:
The most direct ancestors of land plants were probably____.
Answer:
green algae
Question:
About 450 million years ago, the terrestrial landscape on Earth would have___ _.
Answer:
had non-vascular, green plants similar to liverworts forming green mats on rock.
Question:
What evidence do paleobotanists look for that indicates the movement of plants from water to land?
Answer:
waxy cuticle to decrease evaporation from leaves
Question:
You find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery
organism is most likely a plant and not an alga if it _.
Answer:
Is surrounded by a cuticle
