Answer the following question given this paragraph: A later adaption for life on land was the evolution of vascular tissue. Vascular tissue is specialized tissue that transports water, nutrients, and food in plants. In algae, vascular tissue is not necessary since the entire body is in contact with the water, and the water simply enters the algae. But on land, water may only be found deep in the ground. Vascular tissues take water and nutrients from the ground up into the plant, while also taking food down from the leaves into the rest of the plant. The two vascular tissues are xylem and phloem. Xylem is responsible for the transport of water and nutrients from the roots to the rest of the plant. Phloem carries the sugars made in the leaves to the parts of the plant where they are needed. Q: What type of tissue transports water, nutrients, and food in plants? Choices: - rough tissue - normal tissue - smooth tissue - vascular tissue A:
vascular tissue
(Question)
Answer the following question given this paragraph: Q: What do you call something that controls the uptake of water or another substance in the environment, in order to maintain constant internal conditions? Choices: - sporozoans - protozoans - osmoconformers - osmoregulators A:
(Answer)
osmoregulators
Ques: Answer the following question given this paragraph: The substances that comprise heterogeneous mixtures can also be separated by physical means. We will discuss separation techniques in the following lesson. Q: The substances that comprise heterogeneous mixtures can also be separated by what means? Choices: - thermal - chemical - atmospheric - physical A:
Ans: physical
(Q).
Answer the following question given this paragraph: Some mutations have a positive effect on the organism in which they occur. They are called beneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time. There are several well-known examples of beneficial mutations. Here are just two:. Q: Some mutations lead to new versions of proteins that help organisms adapt to changes in their environment and are essential for evolution to occur. what are these mutations known as? Choices: - superficial mutations - evolutionary mutations - provisional mutations - beneficial mutations A:
(A).
beneficial mutations
Ques:Answer the following question given this paragraph: Rutherford's discoveries meant that Thomson's plum pudding model was incorrect. Positive charge is not spread evenly throughout an atom. Instead, it is all concentrated in the tiny nucleus. The rest of the atom is empty space except for the electrons scattered through it. In Rutherford's model of the atom, which is shown in the Figure below , the electrons move around the massive nucleus like planets orbiting the sun. That's why his model is called the planetary model. Rutherford didn't know exactly where or how electrons orbit the nucleus. That research would be undertaken by later scientists, beginning with Niels Bohr in 1913. New and improved atomic models would also be developed. Nonetheless, Rutherford's model is still often used to represent the atom. You can see an animated version of the model at this URL: http://www. clickandlearn. org/gr9_sci/atoms/modelsoftheatom. html . Q: Positive charge is mostly found in what part of an atom? Choices: - electron shell - neutrons - ions - nucleus A:

Ans:nucleus
Ques:Answer the following question given this paragraph: Plant-like protists, which are autotrophs that photosynthesize. Q: Plant-like protists are autotrophs capable of what process? Choices: - sexual reproduction - microevolution - regeneration - photosynthesis A:

Ans:
photosynthesis