Which of the following statements is true?
A) Gymnosperms have seeds that are not enclosed in a protective casing, while angiosperms have flowers that produce seeds with a protective casing.
B) Gymnosperms have flowers that produce seeds with a protective casing, while angiosperms have seeds that are not enclosed in a protective casing.
C) Gymnosperms lack true roots and leaves, while angiosperms lack lignin cell walls.
D) Gymnosperms lack seeds, while angiosperms have flowers that produce seeds with a protective casing.
Answer: A
You might also like to view...
A particular variant of the lambda bacteriophage has a DNA double-stranded genome of 51,365 base pairs. How long would this DNA be?
What will be an ideal response?
Both first- and second-line defenses are specific defense mechanisms that are able to distinguish one pathogen from another
Indicate whether the statement is true or false
Which of the following pairs is mismatched?
A) DNA polymerase — makes a molecule of DNA from a DNA template
B) RNA polymerase — makes a molecule of RNA from an RNA template
C) DNA ligase — joins segments of DNA
D) transposase — insertion of DNA segments into DNA
E) DNA gyrase — coils and twists DNA
Which part of the hemoglobin molecule actually binds the oxygen molecule? Which part binds carbon dioxide?
A. globin chain; heme B. globin chain; globin chain C. heme; globin chain D. cell membrane; cell wall E. heme; heme