Download App

how do organisms reproduce ? — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencehow do organisms reproduce ?4 Marks
Question
What is fission? Explain different types of fission.
✓

Answer

  • Unicellular organism divides to form new individuals.
  • The process of cell division is called fission.
  • Fission is the simplest method of asexual reproduction in unicellular organisms like protozoa and bacteria.
  • Many different patterns of fission have been observed.
  • Types of fission:
  • $(1)$ Binary fission and $(2)$ Multiple fission.
  • (1) Binary fission:
  • Many bacteria and protozoa simply split into two equal halves during cell division.
  • Amoeba, the splitting of the two cells during division can take place in any plane.
  • Some unicellular organisms have different body organisation.
  • e.g., Leishmania (causative agent of Kala-azar), which has a whip-like structure at one end of the cell.
  • In Leishmania binary fission occurs in a definite longitudinal orientation in relation to these structures.
  • (2) Multiple fission:
  • Malarial parasite : Plasmodium divides into many daughter cells simultaneously called multiple fission.

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 "[4 marks Questions]" from how do organisms reproduce ?→how do organisms reproduce ? — all question types→Science STD 10 question papers→Gujarat Board STD 10 question papers→Gujarat Board question paper generator→

Similar questions

Distinguish between:
Cerebrum and Cerebellum
→
What are functional groups? Give examples.
→
Explain : The tubes-blood vessels
→
Explain the process of nutrition in an unicellular organism.
→
$(a)$ Write the chemical formula of hydrated copper sulphate and anhydrous copper sulphate. Giving an activity illustrate how these are inter convertible.
$(b)$ Write chemical names and formula of plaster of paris and gypsum.
→
Give the reason for the advanced sunrise and đelayed sunset.###The sun is seen two minutes earlier than the actual sunrise and the sun is seen for two minutes more even after the actual sunset. Why?
→
Explain human respiratory system with figure.
→
Describe the Tyndall effect.
→
What is electric energy? What is its commercial (or practical) unit? Define it.
→
To understand about magnetic force acting on a current carrying conductor, when placed in an external magnetic field. Explain
→