Which of the following best explains the function of sepals during flower formation? O to receive pollen and encourage hydration O to enclose the flower and promote fertilization O to protect the flower and keep it from drying out O to distract pollinators and discourage fertilization
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Which of the following best explains the function of sepals during flower formation?
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- In flowers, the structures that produce male gametophytes are called _______ ;the strcutures that produce female gametophytes are called _______ . a. pollen grains; flowers c. anthers; stigma b. stamen; carpels d. megaspores; microsporesWhich of the following statements is false? a. Auxin and gibberellin promote stem elongation b. Cytokinin promotes cell division in shoot tips c. Abscisic acid promotes water loss and dormancy d. Ethylene promotes fruit ripening and abscission.Which of the following is NOT a function of auxin? O Fruit ripening Retarding leaf abscission O Promoting the formation of lateral roots O Enhancing apical dominance Stem elongation
- In the Kotukutuku plant, Fuchsia excortiata, why do pollinated flowers remain attached to the plant for several days after pollination occurs and nectar is no longer produced Size of flower and pollination Annual versus perennial reproduction Time and expense to grow the pollen tube outweighs the cost of maintaining the flower on the tree Size of flower and number of flowers on inflorescenceThe physiological effect of ethylene is: Select one: O seed germination O leaf abscission O embryo expansion O stem elongation O swelling of root and stem during seedling stageThe carpel is a specialized organ in angiosperms that eventually matures into fruit following fertilization. O True O False
- Which of the following phrases best explains how differing maturity levels of the pistil and stamen are beneficial for some flowersWhich of the following is NOT part of the male reproductive parts of a flower? Anthers Sperm cells Microspores Ovule PollenFlowers are specialized plant structures used for sexual reproduction. The most visible part of the flower used to attract potential pollinators are the 1 Lcollectively called the 2__. This whorl may be surrounded by small structures called 3 that often resemble leaves, collectively called the 4 As a whole, this entire part of the flower (#2 and #4) is known as the 5 The stem of the flower is known as the and attaches to the 7__ or the base of the flower. Flowers can be male, female, or bisexual. The male part of the flower is called the 8 which is divided into a long, supportive stalk called a(n) and a structure called a(n) 10 ,which makes the pollen. The female part of the flower is called the 11 ,which is divided into a platform where pollen grains can land called a 12 and a long hollow tube called a 13 that leads to the 14 which is where the eggs can be found. Flowers have two different types of symmetry. Bilaterally symmetrical flowers, also known as 15 can be divided into two…
- he table below summarizes the features of 4 different flowers, A to D. Flower petal colour symmetry size/shape scent/odour nectar guides pollen nectar A red zygomophic deep, funnel shaped absent present abundant ample B yellow zygomophic shallow present present some some C white actinomorphic tubular strong absent some ample D purple zygomorphic funnel shaped strong absent some absent List which flowers would be preferentially pollinated by: bees, butterflies, flies and moths A. B, A, D, C B. A, C, D, B C. D, B, A, C D. B, D, C, AFlowers typically have many parts, although some flowers can be missing some of the standard parts. What is the name of each of the following parts:a. The stalk of the flowerb. The end of the stalk, where the other parts are attachedc. The parts that are usually green and protect the flower bud as it developsd. The parts that attract pollinatorse. The parts that produce pollenWhich of the following is not a component of a flower?a. sepalb. stamenc. carpeld. coleoptile