Housefly
Butterfly
Cockroach
Mosquito
Correct answer is B
From the diagram, the larva is a caterpillar, hence, the adult is called a Butterfly.
The structures for gaseous exchange in breathing roots are
stomata
lenticels
cuticle
mitochondria
Correct answer is B
Breathing roots, also known as pneumatophores, have portions of the root which grow upward until they project some centimetres above the low-tide level. They have small openings called lenticels in their bark so that air can reach the rest of the plant’s root system.
Which of the following practices may lead to an infection of the eye? Using
contact lenses
convex lenses
biconcave lenses
concave lenses
Correct answer is A
Contact lenses have a way of causing infections to the eyes at some point. It can cause a lack of oxygen since they are worn directly on the eye, especially if worn for long periods at a time.
Which of the following statements about the response of neurons to stimulus is correct?
Neurons respond to stimulus of any strength
Neurons respond to all stimuli applied in rapid succession
Neurons respond more rapidly during the absolute refraction period
Intensity of stimulus must reach a threshold value before the neurons can be excited
Correct answer is D
Each neuron has a threshold that must be met before an action potential travels the length of the neurons axon. In other words, the neurons don't just begin to act immediately, there is a threshold value where the intensity of the stimulus must get to in order to yield a response from the neuron. This is why you can consciously pinch your self and not feel anything serious but when it is unconscious, it gives you serious pain.
The thyroid gland is found at the base of the
Midbrain
Kidney
Neck
Liver
Correct answer is C
The thyroid gland is an endocrine gland located at the base of the neck.
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