Vacuoles

Q. Question 10
Complete the crossword with the help of clues given below.

Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Units of inheritance present on the chromosomes.

Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.

Q.

Why does plant cell poses large sized vacuole?

Q.

Which of the following is NOT the function of vacuole?

1. Vacuoles do not store food.

2. Isolating materials that might be harmful or a threat to the cell.

3. Maintaining internal turgor pressure within the cell.

4. Allows plants to support structures such as leaves and flowers.

Q. The outermost layer of bacterial cell is called ______.

1. pili
2. cell wall
3. cell membrane
4. capsule

Q. Contractile vacuole in Amoeba helps in:

1. Digestion of food
2. Osmoregulation
3. Storage of food
4. Controlling functions of amoeba

Q. What are the similarities between an amoeba and a white blood cell?

1. Irregular shaped
2. Presence of pseudopodia
3. Lack cell membrane
4. Presence of food vacuoles

1. Both $1\text{and}2$
2. Both $2\text{and}3$
3. Both $1\text{and}3$
4. Both $3\text{and}4$

Q.

Do plants have food vacuoles?

Q. Which cell organelle occupies most of the space in a plant cell?

1. Mitochondria
2. Vacuole
3. Nucleus
4. Endoplasmic reticulum

Q.

Which of the two has a large vacuole : a plant cell or an animal cell ?

Q. Vacuoles in animal cells are larger than the ones found in plant cells.

1. True
2. False

Q. Question 32
Match the terms given in column I with their functions given in column II and fill the blanks given below the table:
$\begin{array}{cc}ColumnI& ColumnII\\ A.Chloroplast& i.Carrieshereditarycharacters\\ B.Cellmembrane& ii.Controlstheactivitiesofthecells\\ C.Nucleus& iii.Siteofphotosynthesis\\ D.Chromosome& iv.Controlsthemovementofthe\\ & materialsintoandoutofcells\end{array}$

A-___; B-___; C-___; D-___

Q. A student examined a particular plant cell through its various stages of growth. After making various measurements, he realised that the increase in cell size was largely due to enlargement of the central vacuole rather than an increase in the amount of cytoplasm. Why might this be an advantageous strategy for the cell?​

1. All of these​
2. Enlarging the cytoplasm would make the cell less turgid.​
3. Enlarging the vacuole would minimise any lowering of the surface area - volume ratio of the cytoplasm.​
4. Enlarging the vacuole would make it unnecessary for the cell wall to stretch.​

Q. Question 10
Complete the crossword with the help of clues given below.

Across
1. This is necessary for photosynthesis.
3. Term for component present in the cytoplasm.
6. The living substance in the cell.
8. Units of inheritance present on the chromosomes.

Down
1. Green plastids.
2. Formed by collection of tissues.
4. It separates the contents of the cell from the surrounding medium.
5. Empty structure in the cytoplasm.
7. A group of cells.

Q. Which organelle among the following contains cell sap?

1. Ribosomes
2. ER
3. Mitochondria
4. Vacuole

Q. Refer to the given figure and select the incorrect statement(s)​.



(i) The part labelled P is found in plant cell only.​
(ii) The part labelled Q is cell wall, which provides rigidity to a plant cell.​
(iii) The part labelled R is the controlling centre.​
(iv) The part labelled R gets its shape from part ​labelled P.​

1. (iii) only
2. (i) and (iv) only
3. (ii) and (iii) only
4. (iv) only

Q. Which of the following cell organelle is responsible for expelling cellular wastes and excess water out of the cell in amoeba?​

1. Contractile vacuole
2. Pseudopodia
3. Chloroplast
4. Cell membrane

Q. Which of the following is not a function of Vacuole?

1. digest stored proteins, fats.
2. maintain the osmotic pressure of the cell
3. store metabolic byproducts and end products.
4. store waste products and food

Q.

Do animal cells contain vacuoles?

Q.

Animal cells have larger vacuoles.

1. True
2. False

Q.

Do bacteria have vacuoles?

Q. Which cell organelle controls the activities inside our cell?

1. Mitochondria
2. Nucleus
3. Ribosome
4. Golgi body

Q. The main function of the contractile vacuole is

1. Synthesis of carbohydrate
2. Eliminating excess water
3. To be a photoreceptor to detect light
4. Resistance for survival during winter and times of drought

Q. Contractile vacuole is present in ________.

1. chlamydomonas
2. E. coli
3. amoeba
4. cyanobacteria

Q. What is role of tonoplast

Q. Contractile vacuole of Amoeba takes part in

1. Digestion of food
2. Osmoregulation
3. Locomotion
4. Ingertion of food

Q. What does the cell vacuole contain?

Q. A suitable term for the various components of cells is _________________.

1. tissue
2. chromosome
3. cell organelle
4. cytoplasm

Q. Which plant cell organelle acts as a storage sac for solid and liquid contents?

1. Cell Wall
2. Cell Membrane
3. Vacuole
4. Nucleus

Q. Kidney of vertebrates resembles with contractile vacuole of protozoans in

1. Expelling out salts
2. Expelling out excess of water
3. Expelling out urea and uric acid
4. Expelling out glucose

Q. Which of the following statements is/are true about vacuoles?

1. They are more in number in animal cells.
2. They can occupy 90% of the plant cell's volume.
3. The membrane of the vacuole is called tonoplast.
4. They help in synthesis of lipids.