The placenta, which sustains the developing embryo and fetus, originates only from maternal tissue.

Answer the following statement true (T) or false (F)


False

The placenta originates from both maternal and fetal tissue.

Biology & Microbiology

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Which group's members have both lungs and gills during their adult lives?

A) sharks, skates, and rays B) lungfishes C) lancelets D) turtles E) alligators

Biology & Microbiology

What is the number of chromosomes found in

an oak tree?

a. 2 b. 4 c. 8 d. 12 e. 24

Biology & Microbiology

The biome with the greatest amount of topsoil and

the richest, most fertile soil is the a. tundra. b. taiga. c. tropical rain forest. d. desert. e. grassland.

Biology & Microbiology

Cocci which divide in the same plane and remain attached are streptococci.

Answer the following statement true (T) or false (F)

Biology & Microbiology