This lymph organ is responsible for producing red and white blood cells and platelets.
A. thymus
B. red bone marrow
C. spleen
D. lymph nodes
B. red bone marrow
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The chemical reactions of photosynthesis occur in which cellular organelle?
A. Mitochondria B. Chloroplasts C. Ribosomes D. Nucleus
Haploinsufficiency ____
a. produces Barr bodies
b. results from elevated gene dosage c. occurs when a diploid organism has only one functional copy of a gene d. occurs due to gene duplication e. refers to the loss of a whole set of chromosomes
Conifers are characterized by all of the
following EXCEPT a. thick cuticles. b. intolerance to warm climates. c. needle-shaped leaves. d. recessed stomata. e. adaptations for conserving water
Most domesticated food crops come from which of the following plant groups?
A) mosses B) gymnosperms C) ferns D) angiosperms