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WorksheetsB10B
Total questions: 18
Worksheet time: 36mins
B10B Plant roots have extensions called root hairs. These root hairs are important in the homeostasis of the plant. Which statement best explains the importance of the root hairs to the stems and leaves of the plant?
Root hairs convert minerals into glucose for immediate use by cells.
Root hairs decrease the need for osmosis and diffusion in vascular t issue.
Root hairs prevent water loss in leaves through transpiration and gas exchange
Root hairs increase the surface area of the roots for nutrient and water absorption
B10B A corn plant produces both male and female flowers. The male flower forms the tassel and the female flower forms the ear of corn . The silks that emerge from the ear are the stigma of the female flower. Each silk leads to an ovule that can become a corn seed. Which of these must happen for corn seeds to develop on the ear?
More tassels than silks need to be present on the same plant.
Pollen grains must fall from tassels and land on the silks of the ear.
Pollen must be transported from the tassel to the silk through the phloem .
The tassels must come into direct contact with the silks of the ear.
B10B Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures. The high temperatures increase the rate of respiration in the plants, thus reducing the sugar Content in some fruits.
Why does increased respiration in the leaves and stems reduce the sugar content in the fruits of a plant?
Chloroplasts move from the fruits to the leaves and stems to provide energy for respiration.
The flow of nutrients shifts from the phloem to the xylem, moving nutrients away from the fruits.
Sugars are moved from the fruits to the roots for storage.
Sugars produced in the leaves are used as an energy source instead of being stored in fruits.
B10B Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most
plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant's ability to
absorb water. Which of these functions would be most immediately affected by a reduction in water uptake
by roots?
Disease resistance
Seed dispersal
Sunlight absorption
Photosynthesis
B10B A student reads this advertisement for a product containing a plant micronutrient that can be added to soiI.
Based on this information, the student can conclude that boron is absorbed by plant roots
from soil and then -
transported to reproductive tissues by the plant's shoot system
stored in plant stems until the flowers are pollinated
concentrated in the roots until the plant's reproductive tissues mature
transported by the phloem to the stomata in leaves, where it attracts pollinators
B10B A student conducted an investigation to study phototropism in grasses. The only difference
between the control group and the experimental group was light conditions. The control group was provided full light, while the experimental group was shaded on one side. The diagrams show the average heights and posit ions of blades of grass in the investigation.
Which statement best explains why the grass tips of the experimental group bent toward the light?
Water evaporated faster on the side of the plant having full light.
Light sensors in the grass tips stimulated a hormone in the shoot system.
The xylem in the root system absorbed more nutrients from the shaded side.
The side facing the light has a greater chance of absorbing carbon dioxide from the atmosphere
B10B Cytokinins are a class of plant hormones that help regulate growth by promoting cell division. Cytokinins are produced mainly in meristematic tissue, where most plant growth occurs. Which system carries cytokinins produced in the roots to the rest of the plant?
Vascular system
Dermal system
Reproductive system
None of these
B10B Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.
Which table correctly identifies the function of each structure or group of structures in the reproduction of the plant?
B10B Plants called sundews have rounded green leaves with many hair- like structures. The ends of these structures contain enzymes in a sticky liquid that looks like nectar or moisture, as shown in the picture. The hairs do not react to dust or nonliving material but will bend inward when insects get caught in the sticky liquid. Sundews digest trapped insects over a period of a few days. Based on this information, what functions do the specialized leaves of sundews perform?
Provide water to the plant and perform photosynthesis
Respond to stimuli and anchor the plant
Provide nutrients to the plant and respond to stimuli
Release pollen to insects and perform photosynthesis
B10B Structures represented in the illustration below are found in the lower epidermis of a plant leaf. The illustration at right shows the response to a certain environmental condition. The response represented in the illustration would most likely be caused by -
a reduced supply of oxygen
long periods of rainfall
high concentrations of glucose
little available water
B10B The internal transport of water and minerals in plants requires that two systems work together. Which diagram correctly describes how the two systems accomplish this
B10B The diagram shows the reproductive system of a plant. Which of the following best describes the interaction that occurs between a plant's reproductive parts during self-fertilization?
Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches the filament, where the sperm fertilizes the egg.
Pollen moves from the ovule up through the style and is released from the stigma. The pollen is transferred to the anther, where the sperm fertilizes the egg.
Pollen is released from the anther and is transferred to the stigma. A pollen tube forms and grows through the style. The pollen tube reaches an ovule within the ovary, where the sperm fertilizes the egg.
Pollen is released from the stigma and is transferred to the anther. A pollen tube grows down from the anther through the filament and fuses with the ovule, where the sperm fertilizes the egg.
B10B Some students are instructed to put a celery stalk in a red dye solution for a lab activity. First the students carefully cut the bottom of the stalk with a scalpel. Then they put the stalk in the beaker with the solution and place the beaker on a shelf in the lab room . The next day they check the stalk and make observations. The students note that the leaves at the end of the stalk have changed color from green to red. The students cut across the celery stalk and use a hand lens to see that the small tube openings along the edge of the celery stalk are also red . The cross section is shown. How do the plant systems work together to make this movement of liquid possible?
The roots absorb water and minerals and move them up to the stem, while the stem moves food produced in the leaves down to the roots in tiny tubes.
The roots anchor the plant in the soil, and the stem holds the leaves up.
The roots absorb their own water and minerals, while the stem absorbs its water and minerals through the leaves.
The roots lose water vapor to the soil, and the stem loses water vapor through the leaves.
B10B The outermost layer of plant stems in dicotyledons consists of epidermal cells and guard cells that surround openings called stomata. The epidermal cells are usually covered with a waterproof layer that provides protection from injury and water loss. The stomata allow gas exchange. The epidermal cells and stomata have functions similar to those of which two human body systems?
Skeletal and respiratory
Cardiovascular and skeletal
Integumentary and respiratory
Cardiovascular and integumentary
B10B An animal can wound a tree by scratching away the bark. The tree can respond to the wound in many ways. Usually sap quickly covers the wound, and then the tree covers the wound with new growth. The diagram shows a cross section of a tree with a healed wound .
What process worked most directly with the transport system to heal the wound
Cellular reproduction
Photosynthesis
Water intake
Carbohydrate storage
B10B Leaves are part of a plant's shoot system. The xylem t issue in leaves transports -
the bacteria needed for nitrogen fixation in root nodules
the wax required to coat t he surface of actively growing tissue
the water and minerals that are absorbed by the roots
the oxygen that regulates the rate of carbohydrate production
B10B Plant hormones serve as chemical messengers between cells and tissues. Auxin is a plant hormone that causes the cells on the shady side of a plant shoot to elongate. The response enabled by auxin is known as -
geotropism
transpiration
phototropism
photosynthesis
B10B Copper is a micronutrient that can be found in soil. Copper is important for reproductive growth in plants and plays an indirect role in chlorophyll production. Which statement
correctly describes the interact ion that occurs between the root and the shoot systems of plants to allow reproduction to occur?
Copper is produced in the roots when copper- containing compounds are hydrolyzed.
Copper that is absorbed by the roots is transported to reproductive t issues by the shoot system.
The shoot system stores copper for later use by the roots and the reproductive structures
The shoot system transports copper to the roots after it is taken in through stomata in the leaves.
