Can you please help me with a simple and short answers please. Also no meed for
ID: 203338 • Letter: C
Question
Can you please help me with a simple and short answers please. Also no meed for explanation i just need answers.Thank you Observation: Stem Diversity The strawberry plant in Figure 19.11a has a horizontal aboveground stem called a runner or stolon. The stolon produces adventitious roots and new shoots at nodes. Label an adventitious root and a new shoot in Figure 19.Ila. List any other plants on display that spread and produce new shoots by sending out stolons. Rhizomes. An iris has a belowground horizontal stem called a rhizome which functions as a fleshy food storage organ (Fig. 19.11b). New plants can grow from a single piece of the rhizome. List any other plants on display that have the same belowground horizontal stems (rhizomes) as the iris. Tubers. A white potato has a belowground rhizome that gives off food storage tubers (Fig. 19.11e). Each eye is a node that can produce new plants. List any other types of plants on display whose belowground stems have tubers. gladiolus has a belowground vertical stem called a corm, which functions in food storage and has thin. List any other types of plants on display that have a vertical stem called a corm. papery leaves (Fig. 19.1ld). Figure 19.11 Stem diversity a. Stolon of a strawberry plant. b. Rhizome of an iris. c. Tuber of a potato. d. Corm of a gladiolus rhizome branchaxillary papery leaves bud adventitious roots axillary bud tuber adventitious roots a. Stolon b. Rhizome c. Tuber d. Corm
Explanation / Answer
Stolons: Stolons are modified stems growing in random directions (NOT horizontally) just beneath the soil surface, generally have long internodes and may store food reserves. New plants originate from the nodes of stolon. Example: Irish/ white potato (Solanum tuberosum), Ranunculus,
Rhizomes: Rhizomes are modified stems growing horizontally below the soil surface and containing scale-like leaves and axillary buds at nodes. New plants develop from buds under suitable environmental conditions. Internodes of rhizomes can be short or long. It can be thick and fleshy due to stored food (ginger, iris) or slender (perineal grasses, some ferns). Example: ginger (Zingiber officinale), turmeric (Curcuma longa), Colocasia, banana.
Tubers: Tubers are modified stems specialized for food storage. In Irish/ white potato the ‘eyes’ are nodal depressions containing a group of buds in the axil of helically arranged scale-like leaves. In white potato, the tubers may arise at the tip of its stolon and at the end of thin rhizomes and consists exclusively of storage parenchyma (except vascular tissues) inside the periderm.
Example- Dahlia, Cassava, etc.
Corm: A corm is a large bud consisting of a conspicuous thick and fleshy stem surrounded by some papery leaves. The adventitious roots form at the base of the stem. Example: gladiolus, cyclamen, crocus.