Cell

Q.

How does an Amoeba obtain its food?

Q.

What is the largest vein in the human body?

Q.

What is cell address?

Q.

How does transpiration help photosynthesis?

Q. Which of the following is not a cell organelle?

1. Cytoplasm
2. Nucleus
3. Lysosome
4. Endoplasmic Reticulum

Q. ______ separates the chest cavity from the abdominal cavity.

1. Pharynx
2. Heart
3. Thorax
4. Diaphragm

Q. Which of the following of is the normal composition of urine?

1. 2.5 % water and 95% of urea
2. 95% water and 2.5% of urea
3. 50 % water and 50% urea
4. 75% water and 25% urea

Q.

Which kind of plastid is more common in

1. roots of the plant
2. leaves of the plant
3. flowers and fruits

Q.

Each stack of thylakoid is called

1. chloroplast

2. stomata

3. lenticals

4. granum

Q.

What are the 2 largest veins in the body?

Q. Blowholes in whales have the same function as in humans.

1. ear
2. heart
3. nose

Q.

In which of the following blood vessels in humans, blood have the lowest velocity

1. Veins

2. Arteries

3. Aorta

4. Capillaries

Q.

Which of the following is not a function of a vacuole?

1. Storage

2. Providing turgidity and rigidity to the cell

3. Waste excretion

4. Locomotion

Q. The process of removal of metabolic wastes produced by the cells is called .

1. filtration
2. diffusion
3. circulation
4. excretion

Q.

Which one of the following in real sense is not an excretory activity ?

1. Giving out carbon dioxide

2. Passing out faecal matter

3. Sweating

4. Removal of urea

Q.

Trees use a straw like mechanism to pull water up to their tip. This pull of water in trees is created by a phenomenon known as .

1. guttation

2. digestion

3. perspiration

4. transpiration

Q.

1. A human with 5 litres of blood in the body has both kidney failures. The blood converts to waste at a rate of 1 litre per day. After what period of time, will he have to undergo dialysis?

1. 3 days
2. 4 days
3. 5 days
4. 2 days

Q.

Vessels that take blood to the heart from the body are called.

1. Arteries

2. Veins

3. Capillaries

4. None

Q.

___ have mucus and cilia to trap dust particles present in the air and stops them from entering our body.

1. Mouth
2. Tongue

3. Nostrils

4. Fingernails

Q. ____ carry oxygen-rich blood from the heart to all other parts of the body.

1. Veins
2. Bones
3. Arteries
4. Muscles

Q. The heart while receiving the blood and while pumping the blood.

1. moves
2. relaxes
3. contracts
4. stops

Q. Which among the following infectious agent use the host cell machinery to carry out their life processes?

1. Protozoa
2. Virus
3. Fungus
4. Bacteria

Q.

Which one always remains open from stomata and lenticels?

Q.

List the different functions performed by the cell membrane.

Q. ______ is a treatment that filters and purifies the blood using a machine.

1. Ultrasound
2. Haemolysis
3. Hydrolysis
4. Dialysis

Q.

Differentiate between arteries and veins.

Q.

Match the following organelles with their cellular significance and choose the correct option from the codes.
$\begin{array}{cc}ColumnI& ColumnII\\ i).\text{Ribosome}& a.\text{Transport}\\ ii).\text{Endoplasmic Reticulum}& b.\text{Suicide bag}\\ iii).\text{Lysosome}& c.\text{Formation of Spindle Fibres}\\ iv).\text{Centriole}& d.\text{Protein synthesis}\end{array}$

1. i).➡ c., ii).➡ d., iii).➡ a., iv). ➡ b.

2. i).➡ d., ii).➡ a., iii).➡ b., iv). ➡ c.

3. i).➡ a., ii).➡ b., iii).➡ c., iv). ➡ d.

4. i).➡ b., ii).➡ c., iii).➡ d., iv). ➡ a.

Q.

define protoplasm and living protoplasm?

Q.

Leaves are green due to the presence of ___________

Q. Salts and ____ are removed along with water as sweat.

1. uric acid
2. ammonia
3. urea
4. carbon dioxide