Share unit 1
Save to Folder
Which statement best summarizes what happens to energy in an ecosystem when it reaches the top of the food chain?
the energy is transferred to the soil and recycled back to the producers
A food chain includes species W, X, Y, and Z. In terms of the number of individuals, species W outnumbers species X, which outnumbers species Y, which outnumbers species Z. At which trophic level in the food chain is species Y?
secondary consumer
describe the process of photosynthesis
it requires energy from the sun
Animal cells cannot carry out photosynthesis because they lack ___________________.
chloroplasts
What happens during the Calvin cycle of photosynthesis?
Glucose is synthesized from carbon dioxide
What is not contained in a seed before it germinates?
photosynthesizing leaves
what is not a function of plant roots?
delivering nutrients to the leaves
Identify how seeds relate to reproduction.
they are products of sexual reproduction
Which plant hormones controls certain tropisms?
auxins
what is not controlled by plant hormones?
photosynthesis
What is the function of guard cells on a leaf?
they allow carbon dioxide into the leaf and water out of it
Which vascular tissue in plants transports water and nutrients from the roots to the stems and then to the leaves?
xylem
suppose a young flowering plant has lost all of its flowers and they do not grow back. how will this most likely affect the plant's life cycle?
the plant will not be able to reproduce, because flowers contain all of the plant's seeds.
does a leave make food or reproduce?
it makes food
true or false? in the fall, when leaves receive less oxygen and light, the often change color.
true
true or false, plants make their own food
true
