Which structure is incorrectly paired with its tissue system?

a) companion cell - ground tissue
b) palisade parenchyma - ground tissue
c) guard cell - dermal tissue
d) tracheid - vascular tissue
e) root hair - dermal tissue


Ans: a) companion cell - ground tissue

Biology & Microbiology

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Which of the following statements is true regarding atmospheric CO2 levels during the last 400,000 years?

A. Atmospheric CO2 levels have remained relatively constant, and have only increased since the 1800s. B. Atmospheric CO2 levels fluctuate periodically, with the highest levels occurring during interglacial periods. C. Atmospheric CO2 levels fluctuate periodically, with the highest levels occurring during glacial periods. D. Correlation exists between low levels of atmospheric CO2 and high temperatures. E. Causation exists between low levels of atmospheric CO2 and high temperatures.

Biology & Microbiology

Consisting of the fossilized remains of seedless vascular plant life, ____ was the first fuel to be widely used by human

societies.

a. gasoline b. petroleum c. natural gas d. crude oil e. coal

Biology & Microbiology

Put the following terms in order from first to last in development.

A. zygote ? morula ? blastula ? gastrula B. morula ? blastula ? gastrula ? zygote C. blastula ? zygote ? gastrula ? morula D. zygote ? morula ? gastrula ? blastula

Biology & Microbiology

After working a 12 hour shift at the hospital Louisa comes home and lies down on her bed. She is lying on her back looking up at the ceiling with her head resting on her arms. What is her body position?

a. Prone b. Anatomical position c. Supine d. Lateral e. Medial

Biology & Microbiology