Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Afferent nerve fibres carry impulses from 

  1. Effector organs to central nervous system

  2. Receptors to central nervous system

  3. Central nervous system to muscles

  4. Central nervous system to receptors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the nervous system, afferent neurons (otherwise known as sensory neurons), carry nerve impulses from receptors or sense organs toward the central nervous system.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Which is not a neuroglial cell?

  1. Oligodendrocyte

  2. Microglia

  3. Astrocyte

  4. Chondrocyte
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The neuroglia or glial cells are defined as supportive cells of the central nervous and peripheral nervous system that primarily support, protect and nourish the neurons. There are basically four types of neuroglial cells:-

Astrocytes, Oligodendrocytes, Microglia and Ependyma.While Chondrocytes are cells that make up the dense connective tissue that is present in the cartilage matrix.
So, the correct answer is 'Chondrocyte'.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Which of the following is not a connecting tissue?

  1. Blood

  2. Bone

  3. Lymph

  4. Nerve
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bone, Blood and Lymph are all types of specialized connective tissue. But, nerve cells belong to a different set of tissues named nervous tissue. Nervous Tissues are the primary tissue of the nervous system that allows communication between various organs and tissues. It is composed of glial cells and neurons.

So, the correct answer is 'Nerve'.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Which is not part of nervous tissue?

  1. Cyton

  2. Axon

  3. Myelin

  4. Intermedin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cyton, axon, and myelin are all components of a neuron. Intermedin is a hormone produced by the intermediate lobe of the pituitary gland, not a part of nervous tissue.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Multipolar neuron means.

  1. With one dendron and one axon

  2. With many dendrons and one axon

  3. With one dendron and no axons

  4. With many dendrons and no axons
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • The multipolar neuron is the neuron which has many dendrons and one axon.
  • Multipolar neurons are the most common type of neuron. They are located in the central nervous system (brain and spinal cord) and in autonomic ganglia.
  • Hence Multipolar neuron means The neurons which have many dendrons and one axon.
  • So, the correct answer is 'with many dendrons and one axon'.
Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Direction of nerve impulse is reversed in nerve with.

  1. Axo-axonic

  2. Axo-dendritic

  3. Both A and B

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

Answer is option A i.e. "Axo-axonic"
Axo-axonic is a type of neural structure synapse between two axons. In case case, the axon of one neuron makes synapse with axon of the other neuron (i.e both, site of neurotransmitter release and site of receptor binding, are axons). It is essential for the transmission of nerve impulses. Axoaxonic junction modulate neuronal transmission by either inhibiting or facilitating depolarization at the presynaptic membrane.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Cells of the nervous system that are specialized to provide support arid protection are known as

  1. Schwann cells

  2. Axons

  3. Neurons

  4. Neuroglia
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Neurons feature many thin projecting fibres called axons, which penetrate deep into tissues. They are able to communicate with other cells by chemical or electrical means at synapses. Neuronal function is supported by neuroglia, specialized cells which provide nutrition, mechanical support, and protection.

So, the correct option is 'Neuroglia'.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

Read the following statements (a-e) and answer the question which follows them 
(a) Dragonflies are used for controlling aphids 
(ii) Rumen is rich in methanogens 
(iii) increase in organic pollution increases BOD 
(d) man made technology for treatment of sewage is better than microbial treatment
(e)Lipases are commercially used in detergents 
How many of the above statements are correct? 

  1. one

  2. two

  3. three

  4. four
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Delicate dragonflies can rid the yards of aphids (small sap sucking insects) and mosquitoes and other insect pests.  Methane is produced in the rumen and hindgut of animals by a group of Archaea known collectively as methanogens, which belong to the phylum Euryarcheota. Among livestock, methane production is greatest in ruminants, as methanogens are able to produce methane freely through the normal process of feed digestion. A high BOD (biological oxygen demand) means that there is plenty of organic matter present. Microbial treatment is an integral part of the sewage disposal and hence cannot be said that man-made treatment of sewage is better. The cleaning power of lipase (or other enzyme containing) detergents increases markedly. The enzymes such as proteases, amylases, cellulases, and lipases are added to the detergents to improve their efficiency. 

So, the correct answer is 'Four'.

Multiple choice biology animal tissue types of neuron nervous tissue neural tissues

What is the function of nerve cells?

  1. Nerve cells receive messages from different parts of the body.

  2. Nerves transfer the messages to the brain.

  3. Brain send commands for the functioning of different organs of the body via nerves.

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

Nerve cells carry out different function as, to receive the message from within or outside of the body, to transfer the messages from body part to the brain, to carry the signal from the brain to different parts of the body. Thus nerve cell helps the brain in control and coordination of the body.
Therefore, option D is correct.