1. Why are signaling pathways associated with shifts to multicellularity? A) It

ID: 149620 • Letter: 1

Question

1. Why are signaling pathways associated with shifts to multicellularity?

A) It is a byproduct of cells being constantly in close proximity

B) Cells are permeable, which leads to passive diffusion of particles.

C) Horizontal gene transfer

D) In order to coordinate development and activity.

2. Ediacaran fauna were diverse and complex.

A) True B) False

3. During the Cambrian Period animals became notably larger thanks to what?

A) Increased oxygen.

B) The expansion of plants on to land.

C)The development of multicellularity.

D) All of the above.

Answer:

• signalling pathways associated with shifts to multicellularity In order to coordinate development and activity.

Hence,option (d) is correct.

• Ediacaran fauna were diverse and complex.

Hence, this statement is true.

• During the Cambrian Period animals became notably larger thanks to Increased oxygen.

Hence,option(a) is correct answer.

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