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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