Answer:
They lose their end walls so the xylem forms a continuous, hollow tube. They become strengthened by a substance called lignin . Lignin gives strength and support to the plant.
Answer:
<u>C. The coastlines of South America and Africa were similar in shape, suggesting that they shared a common tectonic plate.</u>
Explanation:
- As suggested by the Alfred Wegener, the plates of the South America and the African plants had a similar geologic history and thus shared a common tectonic boundary and hence validate the proof of the superclass and the drifting of the plates at various time zones.
- Thus after the 1960s the plate tectonic theory came into the limelight and was heavily recognized to be fit the works of the drifting of the continental landmasses.
<span>It isn't genuine that in
both gametogenesis occasions, which is known to be spermatogenesis in guys and
oogenesis in females, may include meiosis with a similar number of gametes
delivered when finished. Gametogenesis is known to be a procedure in which
cells experience meiosis to shape gametes.</span>
When it nears the sun, due to the power of solar wind
