Answer the following question given this paragraph: Flatworms have a concentration of nerve tissue in the head end. This was a major step in the evolution of a brain. It was also needed for bilateral symmetry. Q: Flatworms have a concentration of nerve tissue in the head end, which was a major step in the evolution of what organ? Choices: - liver - heart - kidney - brain A:
brain
(Question)
Answer the following question given this paragraph: Physics is the study of energy, matter, and their interactions. It is concerned with matter and energy at all levelsfrom the most fundamental particles of matter to the entire universe. Q: Which branch of science is the study of energy, matter, and their interactions? Choices: - geology - biology - meteorology - physics A:
(Answer)
physics
Ques: Answer the following question given this paragraph: The stems of all vascular plants get longer through primary growth. This occurs in primary meristem at the tips and nodes of the stems. Most stems also grow in thickness through secondary growth. This occurs in secondary meristem, which is located in and around the vascular tissues. Secondary growth forms secondary vascular tissues and bark. In many trees, the yearly growth of new vascular tissues results in an annual growth ring like the one in Figure below . When a tree is cut down, the rings in the trunk can be counted to estimate the tree's age. Q: The stems of all vascular plants get longer through primary growth. this occurs in primary meristem at the tips and ______ of the stems. Choices: - edges - bottoms - layers - nodes A:
Ans: nodes
(Q).
Answer the following question given this paragraph: The parasympathetic division controls involuntary activities that are not emergencies. For example, it controls the organs of your digestive system so they can break down the food you eat. Q: What division of the nervous system controls involuntary activities that are not emergencies, such as the digestive organs breaking down food? Choices: - central nervous system - posterior division - somatic nervous system - parasympathetic division A:
(A).
parasympathetic division
Ques:Answer the following question given this paragraph: In an electrically neutral atom, the number of protons equals the number of electrons. Q: How does the number of protons compare to the number of electrons in an electrically neutral atom? Choices: - they are half - they are double - they are triple - they are equal A:

Ans:they are equal
Ques: Answer the following question given this paragraph: The human genome has 23 pairs of chromosomes located in the nucleus of somatic cells. Each chromosome is composed of genes and other DNA wound around histones (proteins) into a tightly coiled molecule. Q: How many pairs of chromosomes are in the human genome? Choices: - 21 - 24 - 13 - 23 A:
Ans:
23