Floating leaves of aquatic plants have:a
stomata only on the lower epidermis.
b. stomata only on the upper epidermis.
c. stomata on both the lower and upper epidermis.
d. no stomata on the epidermis.
e. stomata only within the mesophyll.
B
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a. sand b. silt c. loam d. clay e. humus
Which organelle is found in plant cells but not in animal cells?
A) chloroplast B) endoplasmic reticulum C) centriole D) mitochondrion
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a. Myxinoidea b. Urochordata c. Cephalochordata d. Petromyzontoidea
CODIS (Combined DNA Index System) is a database that contains DNA profiles from all of the following EXCEPT ________
A) crime scene evidence B) public servants C) people convicted of certain crimes D) unidentified remains