Answer the following statements true (T) or false (F)
1. Brassinosteroids produced by plants are closely related chemically to animal steroid hormones.
2. Auxins are able to move vertically; however, they are restricted in movement laterally.
3. One reason auxins are called the "master plant hormones" is because they mostly work apart from other hormones.
4. Plant pathogenic fungi are often able to attack plants because they have mechanisms for overcoming the plant's defense system.
1. TRUE
2. FALSE
3. FALSE
4. TRUE
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Which of the following structures is not matched properly with its function?
A. collecting ducts: selective reabsorption of key electrolytes and solutes B. glomerulus: filtration C. renal tubules: secretion of additional wastes D. ureter: transport of urine to the bladder E. bladder: storage and elimination of urine
What observational evidence do we have that some meteors are caused by debris from comets?
What will be an ideal response?
The ____ system delivers nutrients and oxygen to the cells
a. respiratory b. urinary c. digestive d. lymphatic e. circulatory
Quaking aspen can send out underground stems for asexual reproduction. Sexual reproduction is not as common, but when it does happen, the haploid gametes have 19 chromosomes. How many chromosomes are in the cells of the underground stems?
A) 9 B) 10 C) 19 D) 38