Both mosses and ferns must have freestanding water present (e.g., water droplets) in order to fulfill their requirements for fertilization. Which of the following is the most likely explanation for this?
a. Both mosses and ferns have gametes that require the plant to take in a lot of water in order to fulfill their photosynthetic requirements.
b. Both mosses and ferns have motile male and motile female gametes that come together in water to fertilize.
c. Both mosses and ferns have motile female gametes that require water to travel to the male gametes.
d. Both mosses and ferns have motile male gametes that require water to travel to the female gametes.
e. None of the above is a good explanation for why this occurs.
Answer: d. Both mosses and ferns have motile male gametes that require water to travel to the female gametes.
You might also like to view...
Which scientist was a skilled lens maker and first observed cell structure in protists?
a. Robert Hooke b. Theodor Schwann c. Anthony van Leeuwenhoek d. Matthias Schleiden
Why are women given hormones prior to obtaining eggs for IVF?
a. to protect eggs from damage b. to protect the eggs from mutating c. to prevent premature maturation of the eggs d. to prepare the uterus for eggs e. to cause multiple eggs to mature at once
Which of the following is/are true of the multipolar neurons?
a) The neurons are primarily sensory in nature b) The neurons are primarily motor in nature c) They may be part of the CNS d) They may be part of the PNS
How are comparisons of the number of base substitutions at nonsynonymous sites between genes encoding homologous proteins in different species or in different members of a gene family used to construct a molecular clock?
What will be an ideal response?