EBK BIOLOGY
5th Edition
ISBN: 9780100667976
Author: Maier
Publisher: YUZU
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Chapter 25, Problem 3LTB
Summary Introduction
To analyze:
The effect of light on stem.
Introduction:
The tropism can be defined as the movement or growth of an organism in a particular direction. The phototropism is the phenomenon in which the growth is influenced by the light.
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- 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.arrow_forwardObserve the following photos of the shoot of a monocot (left) and an eudicot (right). How are these shoots similar? How do they differ in terms of the appearance (morphology) of the leaves and the way the leaves are attached?arrow_forwardWhy are terminal buds considered an active part of the stem? Of what importance are nodes to the plant? What are inter nodes and where are they located?arrow_forward
- What is the adaptive advantage or evolutionary advantage being conferred on a plant whose stems are positively phototropic and whose roots are positively gravitropic?arrow_forwardHow does blue light trigger stomatal opening?arrow_forwardWhy can a monocot like an iris branch and increase its number of leaves? Is the fact that the shoot is a rhizome with adventitious roots important? Is water transported from one end of the shoot to the other?arrow_forward
- What process begins endosperm formation? How is the endospermimportant to plants?arrow_forwardWhy are monocot roots slender and diffuse in appearance?arrow_forward(a) What is the shape and arrangement of the palisade mesophyll in the dicot leaf? (b) What is the shape and arrangement of the spongy mesophyll in the dicot leaf?arrow_forward
- What is the biological importance of a flower? What is the difference between microsporogenesis and megasporogenesis?arrow_forwardEach unit of stem that consists of a leaf, axillary bud and internode is referred to as a phytomere. Note that axillary buds always occur above a leaf. Axillary buds give rise to branch shoots. Thus, branching in a shoot system is exogenous (of external origin). How does this compare to branching in a root system?arrow_forwardWhy roots bend towards the source of water?arrow_forward
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