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BIO 123 EXAM WITH COMPLETE SOLUTIONS LATEST UPDATE
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BIO 123 EXAM WITH COMPLETE SOLUTIONS LATEST UPDATE...
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BIO 123 EXAM WITH COMPLETE SOLUTIONS LATESTUPDATE
Root System - ANSWER - generally underground
- Absorbs water and minerals
- stores food
- Anchors a plants in the soil
Root Hairs - ANSWER finger-like extension of epidermal cells, increases the absorptive
surface of the root
what are the two type of roots - ANSWER fibrous (Monocot) and taproot (eudicots)
simple leaf - ANSWER single, undivided blade. some simple leaves are deeply lobed.
Compound leaf - ANSWER the blade is made up of multiple leaflets.
- a leaflets does not have an axillary bud at it's base
Dermal Tissue - ANSWER - A protective outer coating
- in nonwoody plant, it is typically a single tissue layer called the epidermis that is
covered by a waxy cuticle
- a protective layer called the periderm replaces the epidermis in older regions of woody
stems and roots.
Vascular tissue ANSWER Allows the movement of materials within the plant and often
also provides mechanical support.
- includes xylem and phloem
, Xylem ANSWER transports water and dissolved minerals upward from root into the
shoots
- two type of water conducting cells:
Tracheids and vessel elements
- dead at maturity
Phloem ANSWER transport sugars produced leafs are the major source to actively
growing regions of the plants or storage structures
- Sugar conducing cell:
sieve-tube elements
- Alive at maturity
TRUE OR FALSE: Xylem moves water upward and phloem conducts sugar downward
ANSWER TRUE
Ground Tissue ANSWER Internal to the vascular tissue is PITH
- External to the vascular tissue is CORTEX
- Storage, photosynthesis, support, and short-distance transport.
Meristems - ANSWER - plants have continuous growth due to meristems;
undifferentiated tissue composed of dividing cells
- types of meristems include:
Apical and lateral
Apical Meristems (primary growth) - ANSWER - growth in the length
- primary growth is possible due to the apical meristems at the shoots and roots' tips.
Lateral Meristems (Secondary Growth) - ANSWER - Allow the stems and roots of woody
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