CI. Name the following
1. The outermost covering layer in an animal cell
2. The material used by Hooke to observe cells
3. The cell part that has tiny holes
4. The tiny structures present in cytoplasm
5. The thread-like structures which help in the inheritance of characters
6. The green plastids found in plant cells
7. Cells lacking a nuclear membrane
8. Cells with a well-defined nucleus
Answers
Answer:
1. cell membrane
The outermost covering of animal cell is called the cell membrane. It is a living cell membrane and semi-permeable in nature.
2. cork
As you can see, the cork was made up of many tiny units, which Hooke called cells. Cork Cells. This is what Robert Hooke saw when he looked at a thin slice of cork under his microscope. What type of material is cork?
3. cell membrane
The answer is cell membrane because it allows the materials to enter and leave the cell through tiny holes or openings . It is a porous and flexible membrane.
4. The main components of the cytoplasm are cytosol – a gel-like substance, the organelles – the cell's internal sub-structures, and various cytoplasmic inclusions. ... The concentrated inner area is called the endoplasm and the outer layer is called the cell cortex or the ectoplasm.
5. Nucleus also contains thread-like structures called chromosomes. These carry genes and help in inheritance or transfer of characters from the parents to the offspring.
6. Chloroplasts
green plastids for photosynthesis. Etioplasts are the precursors of chloroplasts.
7. Prokaryotes are unicellular primitive organisms that possess nucleus without the nuclear membrane. They do not possess membrane-bound cell organelles. As they are unicellular organism they lack division of labor.
8. Eukaryote, any cell or organism that possesses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus, in which the well-defined chromosomes (bodies containing the hereditary material) are located.
Explanation:
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Explanation:
1- cell membrane.
2- cork.
3- cell membrane
4- organelles.
5- chromosomes.
6- chloroplasts .
7- prokaryotic cell.
8- eukaryotic cell.
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