Download App

Why Do we Fall Ill — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceWhy Do we Fall Ill3 Marks
Question
Differentiate between immediate and contributory causes of a disease.
✓

Answer

  1. Immediate Causes: Factors which are directly responsible for a particular disease are called immediate causes.
Example: Pathogens such as virus, bacteria, fungi, etc.
  1. Contributory Causes: Factors which provide favourable conditions which make pathogens invasion easy are called contributory causes.
Example: poor nourishment, unhygienic environment, pollutants, etc.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 3 Mark )" from Why Do we Fall Ill→Why Do we Fall Ill — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

A $150g$ ball, travelling at 30m/s, strikes the palm of a player’s hand and is stopped in $0.05$ second. Find the force exerted by the ball on the hand.
→
A car starts from rest and moves along the x-axis with constant acceleration 5m s–2 for 8 seconds. If it then continues with constant velocity, what distance will the car cover in 12 seconds since it started from the rest?
→
“High Blood Pressure can be caused by excessive weight and lack of exercise”. Justify the statement.
→
What is the function of bone, cartilage and ligament?
→
A ball falls to the ground as shown below:
  1. ♦ Potential energy $= 80\ J$, Kinetic energy $= 0$
  2. ♦ Kinetic energy $= 48\ J$
  3. ♦ Potential energy $= 0$
  1. What is the kinetic energy of ball when it hits the ground?
  2. What is the potential energy of ball at $B$?
  3. Which law you have made use of in answering this this question?
→
Draw a flow chart showing classification of kingdom Plantae.
→
A 1000kg vehicle moving with a speed of $20\ m/s$ is brought to rest in a distance of $50$ metres:
  1. Find the acceleration.
  2. Calculate the unbalanced force acting on the vehicle.
→
Picks the odd one out and justify your choice by giving reasons.
Moss, Fern, Pinus, Spirogyra.
→
Differentiate between active and passive transport.
→
Why lead compounds are added to petrol? How is it harmful?
→