Tag: zoology

Quizzes (289) Questions (5869)

Questions Related to zoology

Multiple choice zoology life processes in living organism structure and function of spinal cord the spinal cord spinal cord

Lower part of filum terminale has only

  1. Pia mater

  2. Dura mater

  3. Arachnoid mater

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The filum terminale is an extension of the pia mater from the conus medullaris. The internal part is covered by pia mater, while the external part (filum terminale externum) is covered by a sheath of dura mater.

Multiple choice zoology life processes in living organism structure and function of spinal cord the spinal cord spinal cord

Last end of spinal cord is called

  1. Cauda equina

  2. Conus medullaris

  3. Funiculus

  4. Fasciculi
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The spinal cord begins at the occipital bone and extends down to space between the first and second lumbar vertebrae. The terminal portion of the spinal cord is called the conus medularis. It is tapperd and located near the lumbar vertebrae.

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

Unipolar neurons can be traced in

  1. Spinal cord

  2. Motor nerves

  3. Retina

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A unipolar neuron is a type of neuron in which only one protoplasmic process (neurite) extends from the cell body. A pseudounipolar neuron is a kind of sensory neuron in the peripheral nervous system. This neuron contains an axon, that has split into two branches; one branch runs to the periphery and the other to the spinal cord.

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

Cauda equina is the part of

  1. Horse

  2. Tail of horse

  3. Spinal cord

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The spinal cord is a thick cord of the nervous tissue that forms the central nervous system along with the brain. It extends from the brain down through the spine and is protected within the bony vertebral column which is made of bones called the vertebrae. It ends at the second lumbar vertebrae. It is divided into the regions according to the vertebral column as cervical, thoracic and lumbar. The bunch of nerve fibres at the end of the spinal cord is called the cauda equina. It forms a horse tail-like structure. The nerves from this region supply to the pelvic region and lower limbs.

Hence, the correct answer is 'Spinal Cord'

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

The sensory ganglion concerned with spinal reflex is located in

  1. Dorsal root of spinal nerve

  2. Ventral root of spinal nerve

  3. Both A and B.

  4. None of the above.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A dorsal root ganglion (or spinal ganglion) (also known as a posterior root ganglion), is a cluster of nerve cell bodies (a ganglion) in a posterior root of a spinal nerve.
The cell bodies of peripheral neurons are often found grouped into clusters called ganglia. On the basis of the type of nerve cell bodies found in ganglia, they may be classified as either sensory or motor. Sensory ganglia are oval swellings located on the dorsal roots of spinal nerves and on the roots of certain cranial nerves.

Multiple choice zoology neural control and coordination structure and function of spinal cord the spinal cord spinal cord

Cavity present in the spinal cord is termed as

  1. Central canal

  2. Fourth ventricle

  3. Volkmanns canal

  4. Iter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The fourth ventricle present between the brainstem and the cerebellum is called the metacoel. It continues to the spinal cord in the form of the central canal to form the cavity of the spinal cord filled with the cerebrospinal fluid. The central canal is also called the neurocoel.

A. Central canal is the cavity of the spinal cord.
B. The fourth ventricle is present between the brain stem and the cerebellum.
C. Volkmann's canal is present in the long bones.
D. Iter connects the 3rd and the 4th ventricle.
Hence, the correct answer is 'Central canal'

Multiple choice zoology bioenergy biogas environmental use of microorganism microbes in waste treatment and biogas

The residue left after methane production from cattle dung is:

  1. burnt

  2. burned in land fills

  3. used as manure

  4. used In, civil construction
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
The residue left after methane production from cattle dung is used as manure because it supply some organic materials and minerals to the soil.
So, the correct answer is 'used as manure'
Multiple choice zoology microbes in human welfare biogas environmental use of microorganism microbes in waste treatment and biogas

What would happen if oxygen availability to activated sludge flocs is reduced ?

  1. It will slow down the rate of degradation of organic matter.

  2. The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.

  3. Flea would Increase in size as anaerobic bacteria would grow around flocs.

  4. Protozoa would grow in large numbers.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Oxygen is very important for the microorganism to break down and degrade the organic matter which is present in the sewage or the activated sludge. If the oxygen availability of the activated sludge floc is reduced then the degradation rate will slow down.

So, the correct option is 'it will slow down the rate of degradation of organic matter'

Multiple choice zoology bioenergy biogas environmental use of microorganism microbes in waste treatment and biogas

Match column I with column II and select the correct answer from the given codes. 

Column I  Column II
A, Methanogens (i) BOD
B. Fermentors (ii) Methane rich fuel gas
C. Organic waste in water (iii) Production of methane
D. Biogas  (iv) Large vessels for growing microbes 

  1. A-(ii), B-(iv), C-(iii), D-(i)

  2. A-(iv), B-(iii), C-(ii), D-(i)

  3. A-(ii), B-(i), C-(iv), D-(iii)

  4. A-(iii), B-(iv), C-(i), D-(ii)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Methanogens produce methane.
Fermentors are large vessels for growing microbes.
Organic waste in water increase BOD.
Biogas is methane rich fuel gas.
So, the correct option is 'A-(iii), B-(iv), C-(I), D-(ii)'