9th Class Biology Short Important Questions

▉ Define Biology
Branch of science deal with the study of living things animals and plants.
▉Major branches of Biology
  • Zoology
  • Botany
  • Microbiology

▉ Define Zoology, Botany, Microbiology

Deal with the study of animals is called zoology and study of plants is called botany microbiology study of microorganisms.
▉Define extinct and endanger species.
Those species which are not present their last individual in earth live is called extinct those whose are near to extinct is called endanger.
▉ What is enzyme?
Enzyme are protein help in speed up to reaction.
▉ What is activation energy?
Minimum energy require for reaction
▉ Autosome
Body chromosomes is called auto some.
▉ Sex chromosome
X and Y chromosome for sex determination
▉ What is bolus
Rolled of food by tongue
▉ Write the name of digestive system part
  • Mouth
  • Oral cavity
  • Esophagus
  • Stomach
  • Small intestine
  • Large intestine
  • Anus

▉ What is important function of WBC?

WBC act as a fighter agents against germs.When any germs enter than WBC move those site and attack on the germs and kill the germs.

▉ Write the function of RBC?


▉ What Scurvy? 
Scurvy is a disease cause by deficiency of vitamin C and cause teeth weakness.

▉ What is Anemia?

Anemia is a blood deficiency disease in which oxygen are not sufficient for cell and cell die.

▉ What is G० Phase?

The phase in which cell go to rest and stop dividing.Some kidney cell or tissue.

▉ Write the observation of AFA king?

People who slept indoor have no chance of malaria.. Smoky area have no chance of malaria.

▉ Write the significance of meiosis?

Meiosis great significance lead to variation in new born.Adult are not same.Maintain chromosomes number in next generation.
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