1. The infective stage of Toxocara canis is . A. Egg containing L1 B. Egg containing L3 C. Egg containing L2 D. First-stage larva (L1) E. Third-stage larva (L3) 2. All of the following are true about...

1. The infective stage of Toxocara canis is . A. Egg containing L1 B. Egg containing L3 C. Egg containing L2 D. First-stage larva (L1) E. Third-stage larva (L3) 2. All of the following are true about insect growth regulator (IGR) except? A. Interfere with chitin synthesis B. Possess significant activity against adult fleas C. Mimic action of juvenile insect hormones D. Have low toxicity to vertebrates E. Used as part of flea control 3. has been used for years as an immune modulator and anthelmintic. A. Piperazine B. Albendazole C. Levamisole D. Fenbendazole E. Moxidectin