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प्रश्न
Fill in the blank with a suitable word:
The single-celled alga ______ measures 10 cm in length.
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उत्तर
The single-celled alga Acetabularia measures 10 cm in length.
APPEARS IN
संबंधित प्रश्न
Make a comparison and write down ways in which plant cells are different from animal cells.
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
Name any five cell organelles.
What is the function of the following?
Mitochondria
Fill in the blank with a suitable word:
Cell ______ was proposed by Schleiden and Schwann.
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
Answer the following question.
Who discovered cells, and how?
Robert Hooke published a book named ______ in the year 1665.
Who proposed the "Cell theory"?
