What is the difference between a gymnosperm pollen grain and a spore of the Monilophytes?
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What is the difference between a gymnosperm pollen grain and a spore of the Monilophytes?
Homework Answers
Pollen grains of gymnosperms represent male gametophyte whereas spores of ferns do not represent any sex.
Pollen grains are derived from gametophyte by mitosis whereas spores of ferns are developed from sporophyte by meiosis.
Pollen grains are highly resistant to unfavourable condition and remain viable for thousands of years whereas spores are not.
Pollen grains are borne inside male cone whereas sprores are borne inside sporangium.
Pollen grains of gymnosperms are winged wheres spores do not have any wings.
(Ferns are monilophytes)
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What is the difference between a gymnosperm pollen grain
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1. What is the difference between a whole grain and a refined grain! Look in your...
1. What is the difference between a whole grain and a refined grain! Look in your kitchen cabi- nets, breadbox, pantry, and refrigerator. List foods that qualify as true, whole grains. If none do, explain what you should look for when food shopping for grains. 2. List the monosaccharides and dissacharides and provide examples of each. 3. Explain the dangers of a low carbohydrate, high protein diet.
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A pollen grain is a(n)________ a. male gametophyte b. sporophyte c. integument d. female gametophyte
A pollen grain is a(n)________ a. male gametophyte b. sporophyte c. integument d. female gametophyte
2. A 0.015-2 pollen grain acquires a -24.0 PC charge (1 p = 10C). What magnitude and direction of electric field would allow the pollen grain to remain suspended in the air?
What is the difference between a whole grain and a refined grain? Look in your kitchen cabinets, breadbox, pantry, and refrigerator. List foods that qualify as true, whole grains. If none do, explain what you should look for when food shopping for grains. List the monosaccharides and dissacharides and provide examples of each. Explain the dangers of no carbohydrate, very high fat, high protein diets.
1. What is the difference between a whole grain and a refined grain! Look in your kitchen cabi- nets, breadbox, pantry, and refrigerator. List foods that qualify as true, whole grains. If none do, explain what you should look for when food shopping for grains. 2. List the monosaccharides and dissacharides and provide examples of each. 3. Explain the dangers of a low carbohydrate, high protein diet.
8) What is the difference between cross- and self-fertilization? A) In cross-fertilization the pollen from one plant is used to fertilize the egg from the same plant. (B) In cross-fertilization insects are used to pollinate the plants, whereas in self-fertilization the investigator pollinates the plants. C) In self-fertilization the pollen from one plant is used to fertilize the egg from another plant. D) In cross-fertilization the pollen from one plant is used to fertilize the egg of another plant.
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