What is pollen? What advantage does a plant with pollen have over plants without pollen?
What will be an ideal response?
Pollen is an immature male gametophyte wrapped in a protective coating. Pollen can be transported to female gametophytes by wind or by animals. As a result, seed plants require neither the swimming sperm nor moist habitats that limit the distributions of mosses and ferns.
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The International Atomic Energy Agency was created in 1957 and reports to the
A) World Health Organization. B) United Nations. C) United States. D) European Union.
Which area(s) on this world map is (are) likely to be near a plate boundary?
A. A and B B. B and D C. A and D D. A, B, and C only E. C and D
Subatomic particles with a negative charge are called ________
A) atoms B) electrons C) ions D) molecules E) protons
The introduction of which of the following non-native species has done has done extensive damage to the Black Seas's fishing and tourist industries?
A) Atlantic comb jelly Mnemiopsis leidyi B) Seaweed Caulerpa taxifolia C) European green crab Carcinus maenas D) Atlantic cordgrass Spartina alterniflora E) European zebra mussel Dreissena polymorpha