Question

1. Which of the following statements is NOT true regarding protostome diversity?

	A.	Of the 30 animal phyla, more than 2/3 (22 phyla) are protostomes.
	B.	There are more mollusk species than Priapula.
	C.	There are more lophotrochozoans than ecdysozoans.
	D.	A major feature distinguishing different developmental characteristics.

2. The evolution of land plants was challenged by both exposure to direct sunlight as well as adjusting to gravity.

A. True

B. False

Answer 1

1. The correct answer is option 3 - There are more lophotrochozoans than ecdysozoans.- This statement is not true.

lophotrochozoa includes mollusca and annelida whereas ecdysozoa.include arthropoda, nematoda, playtyhelminthes, cnidaria and mamy minor phyla. so number of lophotrochozoa are many fold higher than ecdysozoa.

2. The statement is True.

The main challenge in terrestrial life to avoid direct exposure to sunlight and also to stay erect at the ground. Land plants overcome these two major problems and thrive the land.