34. The plant hormone that inhibits growth and promotes leaf senescence is _____.
(A) abscisic acid
(B) auxin
(C) cytokinin
(D) gibberellin
(E) strigolactone

30. Allelopathy is _____. (A) interference competition (B) the secretion of toxins into the environment by plant roots (C) intraspecific competition (D) the transmission of viruses from deer to rabbits (E) the death of one species from diseases transferred from a second species

31. What is NOT a hypothesis to explain why seed dispersal is so advantageous to plants? (A) Competition avoidance (B) Predator escape (C) Colonization (D) Indirect dispersal (E) Directed dispersal

32. If fertilization occurs, the hormone____, which mimics the hormone _____, is produced by the_____. (A) prolactin, estradiol, anterior pituitary (B) oxytocin, estradiol, anterior pituitary (C) inhibin, progesterone, uterus (D) hCG, FSH, uterus (E) hCG, LH, placenta

33. Which of the following statements concerning excretory system is FALSE? (A) Urea can be processed by filtration, reabsorption, and secretion during the process of urine formation. (B) Kidney contributes pH balance in body fluid. (C) Ascend limb of the loop of Henle is the site for reabsorption of water. (D) Proximal tubule is the major site for reabsorption of nutrients. (E) The final concentration of the urine is determined in the collecting duct.

35. Which of the following elements is NOT macronutrients for plants? (A) potassium (B) phosphorus (C) calcium (D) manganese (E) sulfur

36. Pores on the leaf surface that function in gas exchange are called _____. (A) xylem cells (B) stomata (C) phloem cells (D) cuticle (E) upper epidermis

37. The cells which allow us to distinguish different colors are _____. (A) cones (B) rods (C) both cones and rods (D) only certain rods (E) none of the above

38. Which function is NOT controlled by parasympathetic nervous system? (A) stimulates salivary gland secretion (B) stimulates activity of pancreas (C) stimulates gallbladder (D) stimulates adrenal medulla (E) stimulate activity of intestine

39. The particular sequence in the template strand of DNA is 5' AGTAAT 3'. The corresponding sequence for the mRNA transcribed is _____. (A) 3’ AUUACU 5’ (B) 3’ UGAUUA 5’ (C) 3’ AGUAAU 5’ (D) 3’ UAAUGA 5’ (E) 3’ UCAUUA 5’

40. At which phase is centrioles beginning to duplicate in animal cells? (A) interphase (B) prophase (C) metaphase (D) anaphase (E) telophase