What is the main purpose of seeds in plants that have them?

a. to protect and distribute the zygote

b. to sore water for the mother plant

c. to be fertilized by other plants

d. to entice animals to eat the plant

Which part of the microscope would you turn to go from low to high power?

Which of the following best describes mollusks? a) They are bilaterally symmetrical and have a soft body sometimes covered with a shell. b) They are bilaterally symmetrical and have a soft body always covered with a shell.

When a person gets dehydrated while exercising on a hot day, their pituitary gland releases adh, a hormone that signals the kidneys to retain more water. this is an example of?

Water is a polar molecule. Since oxygen has a slight negative charge and each hydrogen has a slight positive charge, this allows water molecules to form covalent bonds with other water molecules. Form Van der Waals bonds with other water molecules.

Down syndrome is a genetic disorder that is also called trisomy 21. A person with Down Syndrome has an extra copy of chromosome 21. What can you infer is most likely the genetic mutation that results in Down syndrome?

Which describes organs in the human body? the largest living unit a group of cells that work together to perform a common function a group of tissues that work together to perform a common function the smallest living unit

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

A group of cells working together is known as what

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.

How is a scientific hypothesis best evaluated?