Praxis 5025 Science Practice Questions (15 Free)

Correct answer: D. Seeds are alive but dormant; they will grow when conditions are right.

A seed contains a living embryo and meets all criteria for life, but it is in a dormant state. The common misconception equates visible movement with being alive, which is incorrect.

From practice test 2 of our Praxis 5025 study guide (question 6). Original question, not an official exam item.

Correct answer: A. Consuming other organisms

Animals are heterotrophs that cannot produce their own food; they must eat plants or other animals to obtain energy.

From practice test 2 of our Praxis 5025 study guide (question 33). Original question, not an official exam item.

Correct answer: C. Pistil

The pistil is the female reproductive structure of a flower, consisting of the stigma, style, and ovary; pollen grains land on the stigma during pollination. The stamen is male, while sepals and petals are non-reproductive.

From practice test 10 of our Praxis 5025 study guide (question 16). Original question, not an official exam item.

Correct answer: A. It enables the insect to survive unfavorable seasons and resume development later.

Diapause is a temporary dormancy that halts growth and metabolism until conditions improve, allowing survival of winter or drought. It does not speed reproduction, stop all food need permanently, or specifically avoid predation.

From practice test 7 of our Praxis 5025 study guide (question 4). Original question, not an official exam item.

Correct answer: A. They allow gas exchange for photosynthesis and respiration.

Stomata are pores in leaves that open and close to regulate the exchange of carbon dioxide, oxygen, and water vapor, which are essential for photosynthesis and respiration. They do not absorb water, produce chlorophyll, or store glucose.

From practice test 10 of our Praxis 5025 study guide (question 70). Original question, not an official exam item.

Correct answer: B. Embryo

The embryo is the miniature, undeveloped plant within the seed; upon germination, it develops into a seedling. The cotyledon stores food, the seed coat provides protection, and endosperm is a nutrient store (in some seeds).

From practice test 10 of our Praxis 5025 study guide (question 84). Original question, not an official exam item.

Correct answer: C. Tiger

Carnivores eat only meat. Tigers are obligate carnivores, whereas deer and rabbits are herbivores, and squirrels are omnivores.

From practice test 9 of our Praxis 5025 study guide (question 1). Original question, not an official exam item.

Correct answer: C. Niche

A niche describes an organism's role and position in the environment, including its resource use and interactions. Habitat is the physical place where an organism lives.

From practice test 5 of our Praxis 5025 study guide (question 70). Original question, not an official exam item.

Correct answer: A. Cell wall

Plant cells have a rigid cell wall made of cellulose, while animal cells have only a cell membrane. Both cell types have a nucleus, mitochondria, and a cell membrane.

From practice test 2 of our Praxis 5025 study guide (question 46). Original question, not an official exam item.

Correct answer: A. Decrease in shade on the forest floor

Removing trees reduces canopy cover, leading to more sunlight reaching the ground. This is a direct effect. Bird nests decrease (not increase) because nesting sites are lost. Soil nutrients may decrease over time, and rainfall is not directly affected by local tree removal.

From practice test 9 of our Praxis 5025 study guide (question 24). Original question, not an official exam item.

Correct answer: C. Some species will lose their habitat and may decline or disappear.

Development destroys or degrades the original wetland habitat, reducing resources for species adapted to that environment. Not all species can adapt quickly, leading to population declines. The other choices are incorrect because loss affects all organisms and new habitats are rarely identical.

From practice test 5 of our Praxis 5025 study guide (question 26). Original question, not an official exam item.

Correct answer: A. The grasshopper undergoes incomplete metamorphosis, which has only three stages: egg, nymph, and adult.

Grasshoppers exhibit incomplete metamorphosis; they hatch as nymphs and gradually develop into adults without a pupal stage. The student incorrectly applied the complete metamorphosis model to the grasshopper.

From practice test 2 of our Praxis 5025 study guide (question 118). Original question, not an official exam item.

Correct answer: A. Decomposers

Decomposers like bacteria and fungi recycle nutrients by breaking down dead matter. Scavengers consume dead animals but do not break them down to simpler substances.

From practice test 2 of our Praxis 5025 study guide (question 13). Original question, not an official exam item.

Correct answer: C. A strawberry plant sends out a runner that grows new roots.

Runners (stolons) produce genetically identical new plants without seeds, which is asexual. Options A and B involve seeds (sexual reproduction). Option D is fruit dispersal, not reproduction.

From practice test 4 of our Praxis 5025 study guide (question 43). Original question, not an official exam item.

Correct answer: C. Cannot produce their own food

Fungi are heterotrophs that absorb nutrients from dead or living matter, whereas plants are autotrophs that photosynthesize. Fungi have cell walls of chitin, not cellulose, and many are multicellular.

From practice test 2 of our Praxis 5025 study guide (question 57). Original question, not an official exam item.