BSC11_Ch35PQsAnsS06 - B SC1011 Chapter 35 Practice...

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BSC1011 Chapter 35 Practice Questions- Answers 1. In the hierarchy of biological organization, the shoot is _____.  (Concept 35.1)  Your Answer: a system    Correct.  The shoot systen consist of  two organs the stem and leaves. 2 . A root hair is _____.  (Concept 35.1)  Your Answer: an extension of an individual cell that absorbs water from soil    Correct. Root hairs are extensions of individual epidermal cells on the root surface that increase the absorptive  surface area of the root tremendously.   3. Leaves occur at intervals along the plant stem. The region where a leaf is attached to the stem is the _____.  (Concept 35.1)  Your Answer: node    Correct. Nodes are regions of a stem where leaves are attached.   4. Leaves consist of _____.  (Concept 35.1)  Your Answer: a blade and a petiole    Correct. Leaves are the main photosynthetic organs of most plants and consist of a flattened blade and a stalk,  the petiole, which joins the leaf to a node of the stem.   5 . The shoot system of a beavertail cactus consists of broad paddle-like structures covered with clusters of  spines. The spines are modified leaves, so the clusters must be modified _____ and the flat green paddles must  be modified _____.  (Concept 35.1)  Your Answer:
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buds ... stems    Correct: the root system is mostly below ground and is not part of the shoot system. the leaves are spines and a  shoot system would have stems with buds 6. What is the difference between the root epidermis and the shoot epidermis?  (Concept 35.1)  Your Answer: Only the shoot epidermis produces a waxy cuticle.    Correct. The root epidermis lacks a cuticle   7. The plant tissue system most analogous to our circulatory system is the _____.  (Concept 35.1)  Your Answer: vascular tissue    Correct. Vascular tissues transport material throughout the plant just as the circulatory system transports  materials throughout our bodies.   8. Ground tissue is composed of undifferentiated cells with thin walls that are usually involved with storage. At  the stage in an herbaceous (nonwoody) dicot plant's life when only primary growth has occurred, the inner  portion of the ground tissue of a stem is called _____ and the outer portion is called _____.  (Concept 35.1)  Your Answer: pith ... cortex    Correct. In a dicot stem, the ground tissue system consists of an inner pith and outer cortex surrounded by  vascular bundles.   9. Which of the following cells are dead at maturity?  (Concept 35.1)  Your Answer: tracheids and vessel elements    Correct. The water-conducting cells of the xylem are tracheids and vessel elements, both of which are dead at  maturity.   10 . Most of the photosynthesis in plants takes place in specialized _____ cells called the _____.  (Concept 35.1) 
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