That xylem is the substances that feed the plant, the substances that go from the dirt to the plant's body; and the phloem is the substance that goes from the pant to the ground, it's like the excretion of the plant. It's like the xylem goes up and the phloem goes down. The xylem usually is composed by Na, K and other substances that need the plant to live.
Answer:
what deos this mean idont u nderstand
Search on google and hope they have the answer :)
Answer:
John accidentally put his hand on a burning stove and immediately drew it back, yet still he is experiencing pain.
In this sentence, stimulus will be a hand touching fire of the stove. External response will be moving of the hand from the stove immediately.
A stimulus can be described as any physical or chemical change which elicits a response form a living organism. The stimulus is detected as a signal and response is generated in accordance to the signal.
The answer is B. DR,Dr,Rd,dr
