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WorksheetsSTAARCategory 4 Ecological Processes and Animal/Plant System
Total questions: 24
Worksheet time: 48mins
B.10C Which of the following is a correct representation of the organizational levels of a biological system?
A
B
C
D
B.10C In what order are the levels in the diagram?
Population-- community-- ecosystem
Organism-- community-- population
Organism-- population-- community
Ecosystem-- population--community
B.10A Which of the following is an example of the endocrine system directly interacting with the nervous system?
The vertebrae protect the spinal cord from injury.
Hormones provide feedback that affects neural processing.
Sensory receptors in bones send signals about the body position to the brain.
The brain sends signals that control the speed at which food moves through the intestines.
B.10A During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems?
Endocrine and muscular only
Endocrine and reproductive only
Endocrine, muscular, and reproductive
Endocrine, reproductive, and excretory
B.10B The plant structure that transports sugars down from leaves is –
xylem
phloem
epidermis
stomata
B.9C Which statement describes enzymes?
They control the transport of materials.
They provide energy for chemical reactions.
They absorb oxygen from the environment.
They affect the rate of chemical reactions.
B.10B 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 tissue.
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.
B.9B 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.
B.10B 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.
B.10B 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.
B.10A Animal body systems often coordinate their actions to carry out specific functions for the whole animal. Which of these correctly describes the interaction of two biological systems for a specific purpose in the human body?
A
B
C
D
B.10A An informational pamphlet in a health clinic describes an interaction between body systems.
Which statement identifies the body systems that are directly involved in the interaction described and explains how they accomplish the interaction?
The nervous system produces hormones that stimulate the ovum, and the circulatory system moves the ovum into the uterine tube.
The circulatory system supplies the uterine wall with oxygenated blood, and the immune system prevents damage to the ovum.
The reproductive system produces the ovum, and the muscular system causes the migration of the ovum by peristaltic contractions.
The excretory system expels the ovum from the ovary, and the nervous system causes the contractions of the smooth tissues of the uterine wall.
B.10A The diagram shows the internal feedback mechanism that maintains blood-calcium (Ca2+) homeostasis.
If a person has a blood-calcium (Ca2+) level of 8 mg/100 mL of blood, which of the following mechanisms does the body use to maintain blood-calcium homeostasis?
The kidneys take up more Ca2+ and release vitamin D.
The bones release Ca2+.
The intestines increase reabsorption of Ca2+.
All of the above
B.10B 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?
F
G
H
J
B.10A Animals respond to threats in their environment by attacking or escaping. Either response is the result, mostly, of interactions between_____
the circulatory system and the reproductive system.
the digestive system and the integumentary system
the endocrine system and the muscular system.
respiratory rates and defense against pathogens.
B9.B Which of the following statements is true of the production of energy from matter?
Photosynthesis creates energy from CO2 and H2O
Photosynthesis creates energy from carbohydrates
Cellular respiration creates energy from CO2 and H2O
Cellular respiration creates energy from carbohydrates
B.10A The graph models core body temperature during a rapid change in environmental conditions.
Which statement explains the pattern in the graph?
Body temperature varies in a predictable pattern during the day.
Body temperature is controlled by an internal feedback mechanism.
Vasodilation and vasoconstriction are dependent on the time of day.
Vasodilation and vasoconstriction trigger an immediate increase in body temperature.
B.10B To which two external stimuli do the roots of a plant respond?
light and water
gravity and light
water and gravity
temperature and light
B.9C All of the following affect the functioning of an enzyme EXCEPT:
pH
temperature
metabolism
enzyme concentration, substrate concentration, inhibitor molecules
B.11B What is the order of succession shown in this figure?
A, B, C, D
B, A, D, C
C, D, A, B
D, A, B, C
B.11B What is the most important function of pioneer species?
To create rocks
To create soil and add nutrients to the environment
To look nice
Food for animals
B.11B After a volcanic eruption, lava covers the land. What is the order that plants grow to repopulate the area?
Lichens → Shrubs → Grasses → Trees
Lichens → tree → shrubs→Grasses
Grasses → Lichens → Shrubs → Trees
Lichens → Grasses → Shrubs → Trees
B.11A Saprophytes are fungi that feed on dead and decomposing organisms. They secrete enzymes that digest components of cell walls, such as cellulose and lignin. Which statement explains why these fungi are an important part of the biogeochemical cycle?
Saprophytes perform gas exchange that assists the cellular activities of autotrophs.
Saprophytes extract minerals from living tissue to recycle them back into the soil.
Saprophytes transport nutrients through the xylem and phloem in autotrophs.
Saprophytes return organic material to the soil for use by living organisms
B.11A A student researching bacteria concluded a report with the claim below.
"All bacteria disrupts the health of organisms they inhabit, including humans"
The claim is valid because many studies and experiments have shown that bacteria disrupts homeostasis.
The claim is invalid because there are many typed of bacteria that help organisms maintain homeostasis
The claim is invalid because only microorganisms such as viruses disrupt the health of organisms.
The claim is valid because bacteria cause disease.
