The insects were the first organisms to

a. show bilateral symmetry.
b. exhibit segmentation.
c. fly.
d. develop lungs.


d

Biology & Microbiology

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When a solid is changed to a liquid state, the solid

What will be an ideal response?

Biology & Microbiology

Disturbances to an ecosystem, such as fires and floods, are often seen as negative. Describe a situation where regular disturbances are not only beneficial but are also required to sustain the ecosystem

What will be an ideal response?

Biology & Microbiology

Check all of the main functions of MADS box-containing genes in plants.

A. root development B. the transition from vegetative to reproductive growth C. generation of leaf form D. floral organ identity

Biology & Microbiology

Which of the following statements regarding blood pressure is false?

A) Normal blood pressure for adult humans is usually at or below 120/80. B) Hypertension is defined as persistent systolic pressure above 120 and/or diastolic above 80. C) High blood pressure can lead to an enlarged and weakened heart, increased risk of heart attack, stroke, and kidney failure. D) The higher number in a blood pressure reading measures the force of a heart contraction.

Biology & Microbiology