Describe the major differences and similarities between gymnosperms and angiosperms
What will be an ideal response?
ANSWER: Gymnosperms and angiosperms both produce seeds, specialized structures for protecting
the developing sporophyte embryo from drying out and other dangers. Gymnosperms and
angiosperms also produce gametophytes that develop within protective tissues in the
sporophyte. Gymnosperms and angiosperms make pollen grains, specialized male
gametophytes that are protected from drying out and that do not need external water to
reach an egg. All of these adaptations allow gymnosperms and angiosperms to generally
live in dry conditions. Angiosperms differ significantly from gymnosperms in many ways.
Angiosperms have enhanced xylem and phloem that provide more efficient transport of
water and nutrients. Angiosperms have enhanced nutrition for embryos, with double
fertilization that produces a unique triploid endosperm to nourish the embryo. They have
flowers that often attract animal pollinators, providing more efficient means for pollination.
Also, angiosperms have ovaries, tissues that shelter the ovule from desiccation and attack.
Ovaries typically develop into fruits that can help protect seeds as well as aid in seed
dispersal
You might also like to view...
In sporotrichosis the lesions can remain localized or can spread throughout the body; in the latter case it is referred to as
A. fulminating sporotrichosis. B. systemic sporotrichosis. C. disseminated sporotrichosis. D. extracutaneous sporotrichosis.
The ____ is/are responsible for closing off the airway during swallowing
a. larynx b. epiglottis c. pharynx d. intercostal muscles e. pleura
If we were to compare all these organisms we could say that
1.They all belong to the same genus.
2.They are all eukaryotes.
3.They are all single-celled.
4.They are all Archaeans.
Which of the following is (are) used to define the field of microbiology?
A. The size of the organism studied B. The techniques in the study of organisms regardless of their size C. Both the size of the microorganism studied and the techniques employed in the study of organisms regardless of their size. D. Neither the size of the organism studied nor the techniques employed in the study of organisms regardless of their size.