Neural Control and Coordination - Online Test

Q1. The vestibular apparatus is composed of
Answer : Option B
Explaination / Solution:

The vestibular apparatus is composed of three semicircular canals and the otolith organ consisting of the saccule and utricle.

Q2. The space within cochlea called scala media is filled with
Answer : Option B
Explaination / Solution:

Cochlear duct or scala media has endolymph and high potassium ion concentration that the stereocilia of the hair cells protrude into helicotrema.

Q3. Blood vessels are found to be present in which region of eye?
Answer : Option D
Explaination / Solution:

The middle layer, choroid contains many blood vessels and looks bluish in colour.

Q4. Sneha ceased to get smell of a perfume applied to her clothes but her friend Reema who passed by complimented her for the noticeable fragrance. This is an example of :
Answer : Option C
Explaination / Solution:

The sensory organs detect all types of changes in the environment and send appropriate signals to the CNS, where all the inputs are processed and analysed.

Q5.

Among photoreceptors cones are responsible for bright light vision and they also :

i. give colour vision because they contain 3 different pigments.
ii. pigments are sensitive to red,green and yellow lights.
iii. pigments are sensitive to red,green and blue lights.
iv. individual cone cell contains all the three pigments in it.


Answer : Option D
Explaination / Solution:

In the human eye, there are three types of cones which possess their own characteristic photopigments that respond to red, green and blue lights. The sensations of different coloursare produced by various combinations of these cones and their photopigments.

Q6. Select the correct terms for labels

Answer : Option A
Explaination / Solution:

The external layer is composed of a dense connective tissue and is called the sclera. The ciliary body itself continues forward to form a pigmented and opaque structure called the iris which is the visible coloured portion of the eye. In front of the lens, the aperture surrounded by the iris is called the pupil.

Q7. In the diagram below, 1 and 2 are 

Answer : Option D
Explaination / Solution:

The outer ear consists of the pinna and external auditory meatus or canal. An Eustachian tube connects the middle ear cavity with the pharynx.

Q8. Human internal ear is :
Answer : Option A
Explaination / Solution:

Human body is triploblastic in nature, ectoderm, mesoderm and endoderm. These three layers of embryo forms the different organs of human beings. Human internal ear is ectodermal in origin.

Q9. The correctly matched pair is :
Answer : Option A
Explaination / Solution:

Cats have binocular vision that is cat can use two eyes together. This kinds of vision helps in depth measurement and analysis of the image formed on retian.

Q10. In the prosencephalon, first and second ventricles open into third ventricle by :
Answer : Option B
Explaination / Solution:

In prosencephlon, the first and second ventricles open into third ventricles by foramen of Monro. It is the opening that connects the left and right sides of lateral ventricle in brain.