Plant A is a short-day plant with a daylength requirement of 11 hours, whlle Plant B is a long-day plant with a daylength requirement of 12 hours. Which of the two plants will flower and which will remain in vegetative growth in response to the following photoperiod: 10 hours light and 14 hours dark? In what ways, if any, would your answer change if the night period is interrupted by a period of red light?

Plant A is a short-day plant with a daylength requirement of 11 hours, whlle Plant B is a long-day plant with a daylength requirement of 12 hours. Which of the two plants will flower and which will remain in vegetative growth in response to the following photoperiod: 10 hours light and 14 hours dark? In what ways, if any, would your answer change if the night period is interrupted by a period of red light?

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter30: Plant Form And Physiology

Section: Chapter Questions

Problem 22RQ: Phytochrome is a plant pigment protein that mediates plant infection promotes plant growth mediates...

See similar textbooks

Similar questions

Predict whether flowering in a short day plant with a minimum critical length of 14 hours would be expected to occur in the following situations. The plant is exposed to 15 hours of daylight and 9 hours of darkness uninterrupted. The plant is exposed to 9 hours of daylight and 15 hours of darkness. The plant is exposed to 9 hours of daylight and 15 hours of darkness, with 10 minutes exposure to red light in the middle of the night.
This question has to do with plant growth bu,t I do not understand how to anwser it properly. It is in the subject of Botany The question is ,"What is interdeterminate growth and how does it relate to the concepts of meristems and totipotency?"
A seedling germinating under a stone grows at an angle away from the stone and upward. This response to touch is called.______ gravitropism thigmonasty thigmotropism skototropism
The primary growth of a plant is due to the action of the.______ lateral meristem vascular cambium apical meristem cork cambium
Phytochrome is a plant pigment protein that mediates plant infection promotes plant growth mediates morphological changes in response to red and far-red light inhibits plant growth
When stomata open, what occurs?______ Water vapor is lost to the external environment, increasing the rate of transpiration Water vapor is lost to the external environment, decreasing the rate of transpiration Water vapor enters the spaces in the mesophyll increasing the rate of transpiration Water vapor enters the spaces in the mesophyll decreasing the rate of transpiration.
Arrange the following subset of cell depreciation during plant growth ( in length ) in the correct sequence . 1) cell division in primary meristem . 2) cell division in apical meristem . 3) differentiated cells . 4) growing cells in primary meristem.
A short-day plant flowers only when exposed to light for less than 12 hours long. Which of the following would cause the plant to flower? * O a 13-hour night and 11-hour day with 1 minute of darkness after 6 hours a 12-hour day and 12-hour night with a flash of red light an 8-hour day and 16-hour night with a flash of white light after 8 hours O a 9-hour night and 15-hour day with 1 minute of darkness after 7 hours 24 hours of continuous light
Choose the incorrect statement for vernalisation D O Qualitatively and quantitatively dependent on exposure to low temperature Stimulus is perceived by the mature stem apex but not by the leaves Prevents precocious reproductive development late in the growing season Vernalisation helps in increasing the period between germination and flowering
Show the sequence of secondary growth by drawing the row of cells from the boxed area below and labeling the vascular cambium cell (V), 5 xylem cells from oldest (X1) to youngest (X5), and 3 phloem cells (P1 to P3). Show what happens after growth continues by drawing and labeling a row with twice as many xylem and phloem cells. How does the vascular cambium’s location change? A pear has a hard texture but juicy. State two cells that give the characteristics? State the function of the transitional epithelium found in the mammalian urinogenital system. (i) Identify type of tissue lines the air sacs of the lungs. (ii) Explain how the tissue named in (i) adapted to its function.
We know that short-day plants do not really need short days, but actually long nights. Describe the type of treatment that proves this. Is some kind of light given during the night or some period of darkness given during the day?
1. Identify the labeled cells, tissues and other associated structures. В A P Q A (region) CI C2 S D T E F V W H X Y J Z K A1 C1 (basic and subtype) L A2 M. N АЗ A4 C2 (term for xylem arms) 2. Discuss which pathway permits the passage of most solutes and water inside the roots? Which pathway allows the entry of most of the water and some of the solutes inside the root tissue? Explain how the Casparian strip creates a barrier for substance moving through this pathway and how it is circumvented. D (tissue composition) E (single layer of cells) L (red cellular coating) H (conducting tissue) G (give rise to lateral roots) O (function) K (conducting cell) J (уре of maturation) M I (conducting cell) (specific cell) F (conducting tissue) N (name of plant specimen )