A seed has three parts: an embryo, a source of food for the developing embryo called ________, and a protective cover.
A. antheridium
B. ovule
C. rhizoid
D. endosperm
E. cone
Answer: D
You might also like to view...
Which habitat type in the figure above makes available the most new tissue to consumers?
A) tropical wet forest B) open ocean C) algal beds and reefs D) wetlands
Kidney stones form in the
a. renal pelvis. b. ureters. c. urethra. d. urinary bladder. e. glomerulus.
Sickle cell anemia is a condition in which red blood cells exhibit a characteristic "sickle" shape. This arises from a mutation or change in one of the amino acids found in hemoglobin. A single amino acid mutation would directly affect a protein's ________ structure.
A. quaternary B. peptide C. tertiary D. primary E. secondary
Patients with leprosy usually die from complications such as
A) brain damage. B) loss of nerve function. C) tuberculosis. D) pneumonia. E) cardiac arrest.