This cladogram represents an imaginary group of organisms A, B, C, D, and E. A common ancestor for species C and E would be at which position number? a. 1 b. 2 c. 3 d. 4 1. 2. 4. 3. Correct Answer: c
This cladogram represents an imaginary group of organisms A, B, C, D, and E. Which two living species are the most closely related? a. A and B b. B and C c. C and D d. A and D present 1. 2. 4. time 3. relatedness Correct Answer: b
More than half of our antibiotics come from one genus of soil bacterium.
You may be eating a protist with your sushi.
Bacterial fermentation is used to produce cheese, yogurt, buttermilk, and sausage.
The number of bacteria in one human s mouth is greater than the total number of people who ever lived.
Prokaryotes modes of nutrition are more diverse than eukaryotes they have more ways to make a living. Nutrition provides two main resources: energy and carbon for building compounds. What source of energy do photoautotrophs and photoheterotrophs exploit as their primary source of energy? a. inorganic chemicals b. sunlight c. carbon compounds d. carbon dioxide Correct Answer: b
Which of the following describes one of the differences between heterotrophs and autotrophs? a. Autotrophs use organic compounds as a carbon source. b. Autotrophs use inorganic compounds as a carbon source. c. Autotrophs use sunlight as a carbon source. d. Autotrophs use carbon dioxide as a carbon source. Correct Answer: d
Flowering plants provide nearly all our food.
A mushroom is probably more closely related to humans than it is to any plant.
Every minute, humans destroy 60 acres of forest.
Some giant sequoia trees weigh more than a dozen space shuttles.
Adaptations that have contributed to the success of plants in terrestrial environments include seeds, vascular tissue, cuticle, and flowers. There are other significant adaptations as well. For the adaptations listed, arrange them in the order in which they first appear in the fossil record, earliest first. a.cuticle, seeds, flowers, vascular tissue b.seeds, vascular tissue, flowers, cuticle c. cuticle, vascular tissue, seeds, flowers d.vascular tissue, cuticle, seeds, flowers Correct Answer: c
These four adaptations (cuticle, vascular tissue, seeds, and flowers) are key characteristics that define four major modern plant groups. Fill in the blank in the following table using the key provided: a. Ferns (and relatives) b. Bryophytes (mosses) c. Flowering plants d. Gymnosperms Cuticle Vascular tissue Seeds Flowers Bryophytes? Correct Answer: a
These four adaptations (cuticle, vascular tissue, seeds, and flowers) are key characteristics that define four major modern plant groups. Fill in the blank in the following table using the key provided: a. Ferns (and relatives) b. Bryophytes (mosses) c. Flowering plants d. Gymnosperms Cuticle Vascular tissue Seeds Flowers Bryophytes Ferns? Correct Answer: d
These four adaptations (cuticle, vascular tissue, seeds, and flowers) are key characteristics that define four major modern plant groups. Fill in the blank in the following table using the key provided: a. Ferns (and relatives) b. Bryophytes (mosses) c. Flowering plants d. Gymnosperms Cuticle Vascular tissue Seeds Flowers Bryophytes Ferns Gymnosperms? Correct Answer: c
Many flowering plants depend on mutually beneficial relationships with animals.
A single plant can be cloned into thousands of copies.
Flowering plants make up 90% of the known plant kingdom.
Seasonal allergies are reactions to pollen produced for plant sex.
Complete the following table by identifying the plant image as either a. monocot or b. eudicot Mon ocot Eudi cot Correct Answer: a
Complete the following table by identifying the plant image as either a. monocot or b. eudicot Mon ocot Eudi cot Correct Answer: b
Complete the following table by identifying the plant image as either a. monocot or b. eudicot Mon ocot Eudi cot Correct Answer: b
Complete the following table by identifying the plant image as either a. monocot or b. eudicot Mon ocot Eudi cot Correct Answer: a
Monoc ot Eudico t
Predict how the distance X (the distance from the ground level to the 2nd node) changes as the bean plant continues to grow. a. As the stem grows thicker, X will become shorter. b. X will grow larger along with the rest of the plant. c. X will remain mostly the same height. d. X will remain the same unless the top of the plant is removed. In that case, it will begin to elongate and grow upward. X Correct Answer: c
Double fertilization in angiosperms refers to a. each flower being pollinated by more than one pollen grain. b. each pollen grain having two cells. c. the existence of two eggs in each ovary. d. one pollen sperm forming a zygote with an egg and the other forming 3N endosperm tissue. Correct Answer: d
Organic farming is the fastestgrowing segment of U.S. agriculture.
The root hairs of a single sunflower plant, if laid end to end, would stretch for miles.
Through evaporation, an average-sized maple tree can lose more than 200 liters of water per hour during a summer day.
It takes about 40 liters of maple tree sap to produce 1 liter of maple syrup.
How does a tree transport water and dissolved soil nutrients from the roots to the leaf crown? a. The roots use pressure to pump water from the soil to the tree top. b. The tree uses active transport between xylem cells to move water up the tree. c. Plants create a vacuum in their canopy that sucks the water from the soil. d. The process of transpiration pulls water (through cohesion and adhesion) up the tree by evaporation of water through stomata. Correct Answer: d
These redwoods are huge tons of living biomass. As autotrophs, they rely on photosynthesis. What nutrient source contributes the most (by far) to the dry weight biomass of these trees? a. the atmosphere or air b. dissolved soil nutrients c. water from the soil d. soil fungi Correct Answer: a
The pressure-flow mechanism is a hypothesis to explain phloem sap transport. This mechanism relies on the active transport of sugar into phloem vessels. Which of the following allows plant scientists to investigate the contents of phloem vessels without disrupting them? a. small electronic probes b. aphid stylets (feeding tubes) c. colored dyes d. genetically engineered plants Correct Answer: b
Oat seedlings, like most plants, bend toward light. Building on work done by Darwin and his son, Fritz Went isolated a chemical message that diffused from the tip of the oat seedling. How does this chemical, auxin, cause the oat seedling shoot to bend? a. Auxin causes the cells on the light side to contract. b. Auxin causes the cells on the shaded side to divide. c. Auxin causes the cells on the shaded side to elongate. d. Auxin removes cells from the light side of the shoot. Correct Answer: c
A sprouting corn seedling, growing in the dark, was rotated 90 degrees to the right. Predict how the seedling will respond in 24 hours. a. c. d. b. Correct Answer: d
A high school horticulture class wanted to earn money by raising poinsettias for sale for the winter holidays. They began growing their plants from seedlings in September. Their greenhouse is next to the football field, so what precautions would you advise, knowing that poinsettias are long-night/short-day plants? a. Turn on lights in the greenhouse to recreate spring conditions. b. Cover the plants with something black every night to ensure that the plants experience a long night. c. Use gibberellic acid to induce flowering. d. Use ethylene to induce fruit. Correct Answer: b
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