Answer:
Geotropism is the influence of gravity on plant growth or movement. Simply put, this means that roots grow down and stems grow up. ... In this case, the stimulus is gravity. Upward growth of plant parts, against gravity, is called negative geotropism, and downward growth of roots is called positive geotropism.
Explanation:
Your heart circulates your blood throughout your body everytime it beats.
Distillation is a process of separation of two liquids on the basis of their difference in the boiling points. There are two types of distillation process- Microscale distillation and miniscale distillation depending on the type of apparatus used for distillation.
In case of microscale distillation, microscale apparatus is used when the volume of liquid to be distilled is less than 5 ml. Whereas, in case of miniscale distillation, miniscale apparatus is used when the volume of liquid is more than 5 ml.
Hickman distilled head is used for microscale distillation whereas a bit larger vessels are used in miniscale distillation.
Micorscale and miniscale techniques have their own advantages. Both these techniques are cost effective, use less equipments and environmental friendly. Miniscale distillation is used yields more product which is easy to measure. Microscale distillation are difficult but it avoids large cumbersome distillation process and instruments.
Answer:
The correct answer is A. The larynx moves up against epiglottis when food is swallowed to prevent passage of food into it.
Explanation:
The epiglottis is a moist, cartilaginous structure that is part of the cartilaginous skeleton of the larynx. It also marks the boundary between the oropharynx and the laryngopharynx. The epiglottis obstructs the passage of the bolus at the time of swallowing preventing it from going to the respiratory system.
Larynx closure occurs when the vestibular and vocal folds approach the midline during swallowing. Occasionally, when you eat very fast, solid foods or liquids can enter the larynx.
