Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

The path of passage of stimulus when you accidentally touch a hotplate is?

  1. receptor $\rightarrow$ brain $\rightarrow$ muscles
  2. muscles $\rightarrow$ spinal cord $\rightarrow$ receptor
  3. muscles $\rightarrow$ brain $\rightarrow$ receptor
  4. receptor $\rightarrow$ spinal cord $\rightarrow$ muscles
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This describes a reflex arc. The stimulus is detected by a receptor, transmitted to the spinal cord via sensory neurons, and then to the muscles via motor neurons to trigger a response.

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

Destruction of anterior horn cells of spinal cord would result in loss of

  1. Sensory impulses

  2. Voluntary motor impulses

  3. Commissural impulses

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

The anterior horn of the spinal cord contains the cell bodies of motor neurons. Damage to these cells disrupts the transmission of signals to muscles, resulting in the loss of voluntary motor control.

Multiple choice biology nervous system of man structure and function of spinal cord the spinal cord spinal cord

Choose the correct answer from the alternatives given.
Which of the following structures or regions is incorrectly paired with its function?

  1. Brocas regions-screening of information between the spinal cord and the brain regulates arousal and sleep

  2. Medulla oblongata - homeostatic control centres

  3. Cerebellum - unconscious co-ordination of movement and balance

  4. Hypothalamus - production of hormones and regulation of temperature, hunger, and thirst
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Broca's area is a region in the frontal lobe of the dominant hemisphere, usually the left, of the brain with functions linked to speech production.

So, the correct option is 'Broca's region - Screening of information between the spinal cord and the brain regulates arousal and sleep'.

Multiple choice biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling

Which of the following is the main contribution of recycling of paper?

  1. Pollution is reduced by 95%

  2. Energy is conserved by 20%

  3. Water is conserved by 90%

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

D- Recycled paper production reduces transport and CO2 emissions. Recycling one ton of paper can save 17 mature trees and 7000 gallons of water and 4100 kilowatt-hours of electricity.

Multiple choice biology garbage in, garbage out recycling of paper ways to reduce non degradable garbage recycling

Paper and Glass are the wastes that can be

  1. Reuse

  2. Recycle

  3. Decompose

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The 'three Rs' that will help us to conserve natural resources for long-term use are reduced, recycle and reuse.
Reduce- Make use of smaller or less in amount, degree or size. For example, electricity and water.
Recycle- Convert (waste) into reusable material. For example, plastic cups and buckets, glass tumbler, paper, metal objects.
Reuse- Use again or more than once. For example, used envelopes, plastic carry bags, bottles of jam. 
Thus, the correct answer is option B.