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2. How can pollens transfer from an another to the stigma of flower? A. by wind C. by water B. by insects D. all of the above 3.what type of pollination can occurs when a pollen from one flower pollinates on the same flower or in other flowers of the same individual? A. cross-pollination B. fertilization C. self pollination D. germination 4. what happen when an insect gets a nectar from a flower? A. it causes the same to make a tube B. it causes some pollen grains to fall on the stigma C. it causes the flower to wilt D. it causes the pistil to break 5.it is also known as allogamy which happens when pollen is delivered to a flower from a different plant. A. cross pollination B. germination C. self pollination D. fertilizion 6.How do sperm of mosses and ferns move to reach the egg cells? A. through pollen tubes B. transferred by birds C. by swimming D. picked by insects 7.what kind of cone produces the male sex cells in conifers? A. pollen cone B. seed cone C. pollen tube D. female cone
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