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प्रश्न
On the lines given below, write about what you have learned from the activities done in this lesson.
Let me tell you about some of the important things I’ve learned about cells. First, I’ll start with…______
उत्तर
- Cell is the basic unit of an organisms.
- Based on number of cells organisms can be classified as unicellular and multicellular organisms.
- The cells form tissues, Tissues form organs, Organ system help an organism to function.
- The cell wall is seen only in plant cells.
- Cell membrane is seen only in plant cells.
- Cell membrane is seen in all cells.
- The organelles of the cell like chloroplast, Mitochondria, Ribosomes, Endoplasmic Reticulum, Golgi bodies etc help to perform cell functions.
- Nucleus is the controlling centre of a cell.
APPEARS IN
संबंधित प्रश्न
Growth of cell wall during cell elongation take place by ______.
A cell is the smallest unit of life.
Suitable term for the various components of cell is ______.
Why the cell is very important for us?
______ cells are specialised cells that can be transformed into any kind of cells.
Which of these options are not a function of Ribosomes?
- It helps in manufacture of protein molecules
- It helps in manufacture of enzymes
- It helps in manufacture of hormones
- It helps in manufacture of starch molecules
Do you agree that “A cell is a building unit of an organism”. If yes, explain why?
Draw a plant cell and label the parts which
- determines the function and development of the cell
- packages materials coming from the endoplasmic reticulum
- provides resistance to microbes to withstand hypotonic external media without bursting
- is site for many biochemical reactions necessary to sustain life. (e) is a fluid contained inside the nucleus
Fill in the blanks with the terms given in the box below :
| Nucleus | chromosomes | cell wall | cell membrane | protoplasm | cytoplasm | ribosome | cell organelles |
The outermost layer of plant cells is the __(a)____ beneath which is the __(b)____ The term ___(c)___ refers to the jelly-like substance containing all the ___(d)___ The __(e)____ contains thread-like structures called ___(f)___.
______ is the largest organelle.
