Biology, 13.11.2019 12:31 woodb2192

Doug plants a few peas. after two days, he sees the shoot and the root forming. he observes that the shoot grows upward, toward the light. the root grows downward, into the soil. why do these embryonic organs grow in a specific direction?

the shoot is positively phototropic and positively gravitropic; the root is positively phototropic and positively gravitropic.
the shoot is positively phototropic and negatively gravitropic; the root is positively gravitropic and negatively phototropic.
the shoot is positively gravitropic and negatively phototropic; the root is positively phototropic and negatively gravitropic.

Answers: 2

Show answers

Another question on Biology

Biology, 22.06.2019 09:00

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

Answers: 1

Answer

Biology, 22.06.2019 09:00

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer

Answers: 3

Answer

Biology, 22.06.2019 09:10

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.

Answers: 1

Answer

Biology, 22.06.2019 13:00

Astudent completed a lab report. which correctly describes the difference between the "question" and "hypothesis' sections of her report? "question states what she is asking, and "hypothesis" states the result of her experiment "question" states what she is asking, and "hypothesis" states what she thinks the answer to that question is in 'if. then because" format. "question" describes what she is trying to find out, and "hypothesis" states the procedures and methods of data collection. "question" describes what she is trying to find out, and "hypothesis" states any additional information or prior knowledge about the question

Answers: 1

Answer

You know the right answer?

Doug plants a few peas. after two days, he sees the shoot and the root forming. he observes that the...

Questions