Reference no: EM133934943
Questions
1. Which of the following best describes the ploidy level of a fertilized embryo sac?
a. The ploidy level varies among species
b. There are haploid, diploid, and triploid cells
c. All cells are triploid
d. All cells are diploid
e. All cells are polyploid
2. Which of the following have unevenly thickened primary walls that support young, growing parts of the plant?
a. sclerenchyma cells
b. tracheids and vessel elements
c. parenchyma cells
d. collenchyma cells
e. sieve-tube elements
3. Which of the following is true of the charophytes?
a. They are the closest living algal relatives of land plants.
b. They are the ancestors of green algae.
c. They are examples of seedless vascular plants.
d. They share some features in common with land plants, namely spores surrounded by sporopollenin and alternation of generations.
4. Which of the following statements about xylem is incorrect?
a. It transports mainly sugars and amino acids.
b. No energy input is required for transport.
c. The conducting cells are part of the apoplast.
d. It typically has a lower water potential than is found in soil.
e. It conducts material from root tips to leaves.
5. Which of the following would likely not contribute to the surface area available for water absorption from the soil by a plant root system?
a. fungi associated with the roots
b. endodermis
c. mycorrhizae
d. fibrous arrangement of the roots
e. root hairs