Question

1. Which of the following is not a reason green algae are classified as plants? (1 point)
They have cellulose in their cell walls.
They have chlorophyll a and b.
They have genes similar to genes in land plants.
They are single-celled organisms.

Answer 1

They are single-celled organisms.

Answer 2

Multiple Choice
1. Which of the following is not a reason green algae are classified as plants? (1 point)
(0 pts) They have cellulose in their cell walls.
(0 pts) They have chlorophyll a and b.
(0 pts) They have genes similar to genes in land plants.
(1 pt) They are single-celled organisms.
1 /1 point
2. When environmental conditions are unfavorable, why is it an advantage for green algae to reproduce sexually?
(1 point)
(0 pts) They are multicellular when conditions are unfavorable, which favors sexual reproduction.
(0 pts) Sexual reproduction produces larger numbers of offspring in less time.
(1 pt) Sexual reproduction produces offspring that have greater genetic variety and durable zygotes
that can help green algae species survive unfavorable conditions.
(0 pts) Sexual reproduction produces multicellular algae instead of unicellular algae. Multicellular
algae are better able to survive harsh conditions.
1 /1 point
3. Vascular plants are able to grow taller than nonvascular plants because (1 point)
(1 pt) lignin in the cell walls of vascular tissue helps the plant overcome gravity.
(0 pts) they can live in drier areas than nonvascular plants.
(0 pts) they rely on osmosis to transport materials throughout the body of the plant.
(0 pts) there is more sunlight in the areas where vascular plants live.

Answer 3

4. Bryophytes must live in moist areas because they lack vascular tissue. For what other reason do they need to live in moist areas? (1 point)
(0 pts) Bryophytes need the extra water for photosynthesis.
(1 pt) The sperm of bryophytes need water to swim to an egg.
(0 pts) Gas exchange is more efficient in wet areas.
(0 pts) Without moisture, rhizoids cannot anchor the plants.
1 /1 point

5. What is one reason that vascular plants are larger than nonvascular plants? (1 point)
(0 pts) Vascular plants live in areas where they can get more water than nonvascular plants can.
(0 pts) Nonvascular plants cannot live in as many areas as vascular plants, so they stay small.
(0 pts) Nonvascular plants do not reproduce as quickly as vascular plants do, so they do not grow as large.
(1 pt) Vascular tissue carries water and nutrients much more efficiently than can be carried by diffusion.
1 /1 point