Ques and Ans: What is a major food source for other organisms, including humans?
Options:
- (A) gastropod shells
- (B) orchids
- (C) invertebrates
- (D) swamp vegetation
- (E) Most plants
- (F) insects
- (G) barnacles
- (H) animals
(C)
Logic for the answer: Mollusks are a major food source for other organisms, including humans. Mollusks are invertebrates and are no exception. Invertebrates are a major food source for other organisms, including humans.

Ques and Ans: Fungus used to bake bread reproduce asexually by doing what?
Options:
- (A) Cooking
- (B) Deposition
- (C) grow
- (D) It expands
- (E) reproduce
- (F) budding
- (G) heat
- (H) migrate
(F)
Logic for the answer: Yeast reproduce asexually by budding. Yeast, which is a type of fungus, is used by bakers to make traditional bread. Bread baking fungus reproduce asexually by budding.

Ques and Ans: What has a circulatory system with a two-chambered heart?
Options:
- (A) sharks
- (B) insects
- (C) salmon
- (D) animals
- (E) barnacles
- (F) mammals
- (G) tortoises
- (H) alpacas
(C)
Logic for the answer: Fish have a circulatory system with a two-chambered heart. Fish include bass and salmon. Salmon have a circulatory system with a two-chambered heart.

Ques and Ans: How do fungi get nutrition?
Options:
- (A) Exfoliation
- (B) agriculture
- (C) heat produced
- (D) Cooking
- (E) absorb it
- (F) Energy
- (G) Evaporation
- (H) glucose
(E)
Logic for the answer:
Fungi lack chlorophyll, so they cannot make food by photosynthesis as plants can. Fungi are multicellular organisms that absorb their food molecule by molecule. Fungi lack chlorophyll, so they must absorb nutrition molecule by molecule.