PSU Bio 11- FINAL- ALL CORRECT

11 Jun PSU Bio 11- FINAL- ALL CORRECT

Question
Correct 1.

Which of the following statements best describes a commensal symbiotic relationship between two species?

A) Both species benefit.

B) One species benefits and the other is unaffected.

C) One species benefits and the other is harmed.

D) Both species are harmed.

Correct 2.

The fundamental niche of an organism is determined by ______ factors, while the realized niche is determined by ______ factors.

A) biotic; abiotic

B) abiotic; biotic

C) biotic; biotic

D) abiotic; abiotic

Competition between species can be reduced as a result of character displacement. This is because

A) one of the species becomes extinct.

B) the species will no longer compete for the same resource.

C) the niche of at least one of the species is changed.

D) Both B and C are correct.

When a person’s diet is missing a certain nutrient or nutrients, they are said to be ______________.

A) undernurished

B) malnurished

C) anorexic

D) all of the above are true

5.

Of the 20 amino acids required by human beings, nine of these are considered to be essential amino acids because

A) all human carbohydrates contain these nine amino acids.

B) these nine amino acids are the only ones used in human proteins.

C) humans cannot synthesize these nine amino acids.

D) these nine amino acids are lacking in animal-based foods.

6.

Which of the following aided the colonization of land by plants?

A) alternation of generation

B) plant/fungal associations

C) auxin

D) none of the above

The growth of a plant is indeterminate. This means that

A) plant growth does not stop at a certain size.

B) plants do not have specialized tissues.

C) plant growth is not regulated by hormones.

D) plant growth occurs at a constant rate all year.

Peristalsis describes the action of the _______ the digestive tract as food moves through the system.

A) cells lining

B) muscles surrounding

C) blood vessels supplying

D) mucus secreted by

Which of the following would not be true of a wind pollinated species of plant?

A) It would produce large amounts of pollen.

B) It’s flowers would produce large amounts of nectar.

C) Members of the species would grow relatively close together.

D) It would produce small, inconspicuous flowers.

Which of the following could be considered to be both a biotic and abiotic component of an organism’s environment?

A) sunlight

B) temperature

C) rocks

D) metabolic wastes

As energy flows through the food web in an ecosystem, the amount of energy that is transferred from one trophic level to the next trophic level

A) increases.

B) stays the same.

C) decreases.

D) may increase or decrease, depending upon the system.

Chemosynthesis refers to a process that is carried out by

A) almost all plants.

B) bacteria that live at deep-sea hydrothermal vents.

C) plants specialized to live in the desert.

D) fungi in tropical rain forests.

Autotrophs are organisms that

A) obtain energy by breaking down tissues of organisms that have died.

B) harness external energy sources to produce complex chemical compounds.

C) depend directly on primary producers for their energy and nutrients.

D) eat other autotrophs to obtain energy.

For your final examination before you receive your degree from Penn State, you have been given a slide that contains an unknown tissue from a multi-cellular eukaryote. You have been asked to identify if that tissue is from an animal, a fungus, or a plant. As you stare through the microscope at the slide, you remember that you learned the major differences between these cells in Biology 11. You look for the presence of ______, found only in plant cells, and the absence of ______, never seen in animal cells. The cells that you are looking at have a cell wall and do not have chloroplasts. You confidently circle ______ on the answer sheet. Biology 11 has saved the day!

A) chloroplasts; mitochondria; animal

B) mitochondria; chloroplasts; animal

C) chloroplasts; cell walls; fungus

D) mitochondria; cell walls; fungus

_______ is the pigment that allows plants to respond to changes in daylength.

A) Chlorophyll

B) Auxin

C) Melanin

D) Phytochrome

When they winter in Central and South America, robins form flocks and feed on fruit. During the summer, they migrate to North America, where they feed on caterpillars, earthworms and other animals. These birds are best described as

A) herbivores.

B) omnivores.

C) detrivores.

D) carnivores.

If a population is in equilibrium, the

A) birth rate will be greater than the death rate.

B) number of individuals will increase each year.

C) birth rate will be equal to the death rate.

D) number of individuals will decrease each year.

All of these organs are part of the digestive system except the

A) pancreas.

B) kidney.

C) tongue.

D) stomach.

Which of the following is not a characteristic of animals?

A) multicellularity

B) heterotrophy

C) active movement

D) cell walls

Which structure(s) do most plants use to acquire the energy that they need for cellular processes?

A) the roots

B) the leaves

C) the stem

D) all of the above structures are used by plants to acquire energy

Which one of the following aspects of plant biology is not directly involved in maintaining an adequate supply of water for the entire plant?

A) phloem

B) roots

C) xylem

D) transpiration pull

The ability of plants to respond to light by growing toward a light source is an example of

A) geotropism.

B) photoperiodism.

C) phototropism

D) thigmotropism

Which sequence gives the correct order of the levels of organization (lowest to highest) in multicellular animals?

A) organ systems – organs – cells – tissues

B) tissues – cells – organs – organ systems

C) cells – tissues – organ systems – organs

D) cells – tissues – organs – organ systems

Which of the following gives the correct order for energy flow through an ecosystem?

A) primary producers ? secondary producers ? tertiary producers

B) primary consumers ? primary producers ? secondary producers

C) secondary consumers ? primary consumers ? primary producers

D) primary producers ? primary consumers ? secondary consumers

Plants use their roots to acquire nutrients from the soil. Minerals must enter the roots through ____________ while water enters roots through ___________.

A) active transport; active transport

B) osmosis; active transport

C) active transport; osmosis

D) osmosis; osmosis