Answer the following question given this paragraph: The body of a cnidarian consists of two cell layers, ectoderm and endoderm. The cells surround a digestive cavity called the coelenteron (see Figure below ). Cnidarians have a simple digestive system. The single opening is surrounded by tentacles, which are used to capture prey. The tentacles are covered with nematocyst cells. Digestion takes place in the coelenteron. Nutrients are absorbed and gases exchanged through the cells lining this cavity. Fluid in the coelenteron creates a hydrostatic skeleton. Q: Cnidarians have a simple digestive system with a single opening surrounded by what type of structures, which are used to capture prey? Choices: - spines - antennae - claws - tentacles A:
tentacles
(Question)
Answer the following question given this paragraph: Like mammals and birds, and unlike other reptiles, crocodiles have a four-chambered heart. But, unlike mammals, blood with and without oxygen can be mixed. Q: Like mammals and birds, and unlike other reptiles, crocodiles have how many chambers in their heart? Choices: - one - six - two - four A:
(Answer)
four
Ques: Answer the following question given this paragraph: Q: Oxygen, carbon, hydrogen and what other element make up approximately 96% of living matter? Choices: - calcium - helium - silicon - nitrogen A:
Ans: nitrogen
(Q).
Answer the following question given this paragraph: Chromosomal alterations are mutations that change chromosome structure. Q: Alterations that change chromosome structure are known as? Choices: - lesions - traits - deformities - mutations A:
(A).
mutations
Ques:Answer the following question given this paragraph: chemical reaction: Involves a transfer of energy. There are four visual clues to indicate a chemical reaction. Q: There are how many visual clues to indicate a chemical reaction? Choices: - three - five - seven - four A:

Ans:four
Answer the following question given this paragraph: Q: What are butterflies and bees an example of? Choices: - spores - species - parasites - pollinators A:
pollinators