Having some problem Biology question?
1. A student is examining a large, multicellular plant which he believes to represent an entirely new division. The organism produces no pollen or seeds. A cross-section through what appears to be the stem reveals no xylem or phloem tissue. No organs are present. Some specimens have cells that are all haploid; others are composed entirely of diploid cells. The organism cannoth possibly be a(n):
A. Fern D. Vascular plant
B. Alga E. Member of an undiscovered division
C. Moss
2. A child notices two houseflies on the table. One is twice as large as the other. The child asks: “if we feed it plenty of sugars, how long will it take the little fly to grow as big as the big one?”
3.Why are arthropods small?
A. They are the most numerous organisms on the earth.
B. They reproduce rapidly
C. They have exoskeletons
D. Arthropods are a source of food for many other animals
E. They have to fill many ecological niches.
please explain your answer after selecting one of the following. thank you so much