NCERT Class VIII Science Solutions: Chapter 8-Cell Structure and Functions Part 2 (For CBSE, ICSE, IAS, NET, NRA 2022)

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Question 4:

Which part of the cell contains organelles?

Answer:

Cytoplasm, gelatinous fluid inside a cell contains various organelles like mitochondria, Golgi bodies, ribosomes etc.

Question 5:

Make sketches of animal and plant cells. State three differences between them.

Answer:

Differences between Part, Plant Cell and Animal Cell
Sl. No.PartPlant CellAnimal Cell
1.Cell wallPresentAbsent
2.CentrosomesAbsentPresent & helps in cell division
3.PlastidsPresentAbsent
4.VacuoleLarge VacuoleSmall Vacuole or Absent
As Showing in Image is a Plant Cell and Animal Cell

Question 6:

State the difference between eukaryotes and prokaryotes.

Answer:

  • Prokaryotes: The cells having nuclear material without nuclear membrane are termed as prokaryotic cells. The organisms with these kinds of cells are called prokaryotes.

Examples: Bacteria and blue green algae.

  • Eukaryotes: The cells having a well-organized nucleus with a nuclear membrane are termed as eukaryotic cells. The organisms with these kinds of cells are called eukaryotes.

Examples: Onion cells and cheek cells.

As Showing in Image is a Eukaryote and Prokaryote

Question 7:

Where are chromosomes found in a cell? State their function.

Answer:

Chromosomes are found in the nucleus of the cell. These carry genes and help in inheritance or transfer of characters from the parents to the offspring.

Chromosomes are thread-like organized structures located inside the nucleus of both animal and plant cells.

Each chromosome is made of the combination of proteins and deoxyribonucleic acid (DNA) .

This Diagram Shows Chromosomes Found in a Cell

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