__________ species of many plants (and a few animals) originated by chromosome doublings and

hybridizations. Fill in the blank(s) with the appropriate word(s).


Polyploid

Biology & Microbiology

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Haploid organisms growing via mitosis from spores are called gametophytes

Indicate whether the statement is true or false.

Biology & Microbiology

At the end of the electron transfer chain, the

final electron acceptor is

a. ATP. b. oxygen. c. NADP+. d. water. e. NADPH.

Biology & Microbiology

The cell walls of fungi are composed mainly of

a. cellulose. b. lignin. c. chitin. d. pectin. e. protein.

Biology & Microbiology

An untied inflated balloon flies because

a. the pressure is higher inside than outside the balloon. b. the pressure is lower inside than outside the balloon. c. air flows down its pressure gradient. d. both a and c occur.

Biology & Microbiology