callmehellokitty callmehellokitty

08-02-2021
Biology

contestada

BIOLOGY STUDENTS, I NEED UR HELP.. Substances transported in the phloem are carried upwards in the stem at some time of the year and downwards at other times. Explain why substances are transported in the phloem upwards at one time of the year and downwards at another. *

Respuesta :

kristina444 kristina444

08-02-2021

during growing season when the plant photosynthesises (spring and summer) they travel down to the roots to be stored.
they go upwards when photosynthesis doesn’t occur (winter) to provide nutrients and cellular energy to parts like the leaves.

hope this is what you needed!!

Answer Link

Otras preguntas

Which of the following feather types helps to reduce drag produced by wind resistance during flight? Flight feathers Primary feathers Secondary feathers Contour

Describe the process that results in the formation of a tetrad.

points for debate in favor and against modern education

4.2: Roman Numeral Converter Write a program that asks the user to enter a number within the range of 1 through 10. Use a switch statement to display the Roman

Last night you went to a restaurant, and the bill for 3 adult meals and 2 children's meals was £73. Last week you went to the same restaurant and paid £89 for 2

The cell in the bone marrow that gives rise to all other blood cell types is the ________.

occurs when an infected individual passes the infection on to other individuals, who pass it on to still others, increasing the penetration of the infection int

The Fed targets a 2% inflation rate. Assume the growth rate of real GDP (Y) is 1.5% and the rate of change of the velocity of money (V) is constant. By how much

The fertilized ovule gives rise to the ________. fruit seed endosperm embryo

The manager in the coronary care unit believes that the most important ethical considerations in performance evaluations are that they include the employee’s go