Concept explainers
Introduction :
Plants have many different tissues with specific function in different parts. There are three types of cells that form the plant tissues. They function together to provide food production and storage; give flexibility, support, and strength to the plants. Parenchyma is the most flexible and thin cell found in the plants. Another tissue name vascular tissues are involve in the transportation of food, water, minerals, and other substances throughout the plant body. It works just like the blood vessels in humans.
Answer to Problem 8A
Correct answer :
The correct answer is option (C) presence of tracheids and vessels.
Explanation of Solution
Explanation/justification for the correct answer :
Option (C) presence of tracheids and vessels. They have end walls when they get mature just like the other mature vessels. Therefore, it is less efficient than the vessel elements in transporting materials. The non-flowering seed plants, i.e., gymnosperm made entirely of tracheids and are less adaptive to different environment in comparison to the flowering seed plants that are composed of tracheids as well as vessels. So, the correct answer is option (C).
Explanation for incorrect answer :
Option (A) presence of stomata in the roots. The root stomata are found in the leguminous plants. It is involved in the increase of gaseous exchange while respiration process and also increase the nutrient and water transfer for the fast grow of primary roots. So, this is an incorrect option.
Option (B) amount of sugar stored in the roots. All the plants have the process of storing of sugar in the roots or the trunk or stem in the form of starch. Therefore, this phenomenon cannot make non-flowering and flowering plants different. So, this is an incorrect option.
Option (D) structure of parenchyma. The parenchyma is a thin-walled cell that involve in the photosynthetic process of plants. It is considered as photosynthetic tissue in leaves, endosperm of seeds, and pulp of fruits. Therefore, this phenomenon cannot make non-flowering and flowering plants different. So, this is an incorrect answer.
Chapter 22 Solutions
Glencoe Biology (Glencoe Science)
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