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Ribosomes are the centres of
Which statement is incorrect with respect to multi-cellular organisms?
Many cells aggregate in a single body
Various cells coordinate to form a functional organism.
Every multi-cellular organism originates from a single cell.
Every cell in the body is responsible to carry out all the functions of the body.
Which cell organelle provides the pathway for the distribution of nuclear material?
In which case does a single cell constitute a whole organism?
The solute concentration is higher in
None of these
Which of the following substances are not stored in vacuoles?
Which is not a postulate of cell theory?
All organisms are composed of cells.
The fluid substance of the cell is protoplasm.
Cell is the basic unit of life.
All cells arise from pre-existing cells.
The test tubes A, B and C are taken with food samples of dal, mustard and rice respectively in powdered form. On adding iodine solution the black colour is observed in:
Test tube A
Test tube B
Test tube C
None of these
If dried apricots are initially placed in plain water for some time and then into a concentrated solution of sugar, they will:
Initially shrink and then swell
Initially swell and then shrink
Initially swell and then burst
The fine roots of plants absorb water from the soil through the process of
Plastids that are colorless or white in color are called
Which of the following is absent in prokaryotes?
What is the relation between lysosomes and endoplasmic reticulum?
The enzymes of lysosomes are made by rough endoplasmic reticulum.
Lysosomes and endoplasmic reticulum carry out same functions.
The enzymes of lysosomes are made by smooth endoplasmic reticulum.
The enzymes of endoplasmic reticulum are made by lysosomes.
Which microscope made it possible to observe the complex structure of cell and its organelles?
Which of these is acellular?
Cell wall of plants is mainly composed of
The diagram shows a magnified view of a particular part of a human cell. Name the part labelled X
Which cell organelle is not bound by a unit membrane?
What is ‘autolysis’?
Which of the following cell organelles can make complex sugars from simple sugars?