Answer;
Adrenal glands
Explanation;
-When confronted with a stressor, the adrenal glands respond by producing stress hormones, including catecholamines, cortisol, and epinephrine.
-In response to acute stress, the body's sympathetic nervous system is activated due to the sudden release of hormones. The sympathetic nervous systems stimulate the adrenal glands triggering the release of catecholamines, which include adrenaline and noradrenaline.
-These "stress hormones" cause several changes in the body, including an increase in heart rate and blood pressure.
Answer:
The idea of spontaneous generation was disproved by Francesco Redi.
Explanation:
- Spontaneous generation is a theory that states that living organism can generate from an inanimate object.
- In, 1668, Francesco Redi demonstrate an experiment explaining the theory of spontaneous generation by using meat.He noticed that flies laid eggs on meat which was kept open and maggots developed.
- He took three pieces of meat to do the experiment.
- The first piece of meat was kept open and as usual maggot development takes place.
- With the 2nd piece of meat,he covered it with a piece of cheesecloth and noticed that,flies lay eggs on the cheesecloth but when he removed the cloth,maggot did't form.
- Next, he took a piece of paper and cover the meat piece, and he noticed that flies did't lay any eggs and thus no maggots formed.
<span>Periderm is a term used to refer as the multilayered system of tissues, which is usually made of cork or phellem. When plant's girth is increased due to its secondary growth, they replace epidermal tissues with periderm. Periderm constitutes phellem or cork cells whose walls are thick with a waxy substance called the suberin which protects the surface of the cells and waterproofs them. This secondary covering are formed on small woody plants from the phellogen, a meristematic cell layer which is responsible for the periderm's development.
</span><span /><span>
</span>
D. They convert glucose into another form of energy used by cells.
