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प्रश्न
the question has four options. Choose the correct answer:
Cell theory states
विकल्प
all cells have a nucleus
all cells are living
cell reproduces by mitosis and meiosis
cells are functional and structural unit of plants and animals
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उत्तर
cells are functional and structural unit of plants and animals
APPEARS IN
संबंधित प्रश्न
Carry out the following osmosis experiment:
Take four peeled potato halves and scoop each one out to make potato cups. One of these potato cups should be made from a boiled potato. Put each potato cup in a trough containing water. Now,
- Keep cup A empty.
- Put one teaspoon of sugar in cup B.
- Put one teaspoon salt in cup C.
- Put one teaspoon sugar in the boiled potato cup D.
Keep these for two hours. Then, observe the four potato cups and answer the following:
- Explain why water gathers in the hollowed portion of B and C.
- Why is potato A necessary for this experiment?
- Explain why water does not gather in the hollowed-out portions of A and D.
Write short notes on the following.
Cytoplasm
Write short notes on the following.
Nucleus of a cell
What is the name of the chemical substance which constitutes the genes?
Do you think the cells of an elephant would be larger than the cells of a rat? Explain briefly.
Fill up the blank with the terms given below
All cells arise from ______ cells
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
Write a short answer.
Why is a cell called the structural unit of a living organism?
Justify the statement "cell is the basic unit of life"
Expand - RER
