1. The male rat produces sperms in a pair of _______.   ovules   testes   ovaries   Hint Half-n-half Clue   2. Which of the following vertebrates is not a freshwater fish?   Perch   Herring   Pike   Stickleback   Minnow   Half-n-half Clue   3. Which of the following vectors is a vertebrate?   Flea   Cockroach   Mosquito   Tsetse Fly   Rat   Half-n-half Clue   4. The female rat produces ova in a pair of _______.   ovules   testes   ovaries   Half-n-half Clue   5. Which of the following mammals is a herbivore?   Bear   Dolphin   Lynx   Walrus   Hippopotamus   Half-n-half Clue   6. Milt from the hard roe of the male fish fertilizes the ova.   True   False   7. Which of the following animals is not an invertebrate?   Octopus   Amoeba   Shrimp   Pelican   Sea Anemone   Half-n-half Clue