Which type of fossil is considered a trace

fossil?



a. footprint
b. shell
c. seeds
d. teeth
e. spores


A

Biology & Microbiology

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Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The flower color trait in radishes is an example of which of the following?

A) a multiple allelic system B) sex linkage C) codominance D) incomplete dominance

Biology & Microbiology

Which animal is a chordate?

a. sea star. b. sea cucumber. c. acorn worm. d. lancelet.

Biology & Microbiology

Essential organic substance that are used in only tiny amount by the body are called

A. trace elements B. hormones C. vitamins D. minerals

Biology & Microbiology

Complement helps in the defense against bacterial invasion by:

A. promoting phagocytosis. B. neutralizing bacterial toxins. C. preventing bacteria from penetrating the skin. D. fusing lysosomal granules to bacterial cell walls.

Biology & Microbiology