The ____ of a plant is self-perpetuating embryonic tissue typically found at the tips of shoots and

roots.



a. ground tissue
b. protoderm
c. vascular tissue
d. meristem
e. dermal tissue


D

Biology & Microbiology

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The following question(s) relate to the data table below, showing typical fluctuating pH and dissolved oxygen levels in a fish pond with a heavy concentration of algae over a 24-hour period.TimeOxygen (ppm)pH2 a.m.4.57.74 a.m.2.87.26 a.m.2.26.88 a.m.2.56.810 a.m.3.97.2Noon6.57.72 p.m.10.08.34 p.m.12.18.86 p.m.13.19.28 p.m.13.09.210 p.m.12.08.8Midnight10.88.3In such a pond that contains algae and fish, what is happening to the oxygen?

A. Oxygen is only consumed by the fish B. Oxygen is only consumed by both the algae and the fish C. Oxygen is only produced by the algae D. Oxygen is produced by the algae, and consumed by the algae and the fish

Biology & Microbiology

The molecule shown above is the pyrimidine ____, which is typically found in both DNA and RNA

a. thymine b. adenine c. uracil d. guanine e. cytosine

Biology & Microbiology

Psychoactive drugs may act by altering the concentration of neurotransmitters in the brain.

a. true b. false

Biology & Microbiology

Development of an animal is connected to the genes that are expressed during development. What roles have been proposed for Hox genes in the evolution and morphology of animal species? Select all that apply.

_____ Variation in the number of Hox genes has led to the evolution of new animal species. _____ An increase in the number of Hox genes leads to an increase in the body size of an animal. _____ The greater the number of Hox genes the more complex the body plan of the animal. _____ The clustering of Hox genes has only evolved in vertebrates and is responsible for the evolution of vertebrae.

Biology & Microbiology